diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
index f9ec6054..51d2c924 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
@@ -2592,7 +2592,6 @@ button.map-qso-card:focus-visible {
   box-shadow: 0 16px 30px rgba(0, 0, 0, 0.24);
   backdrop-filter: blur(6px);
   -webkit-backdrop-filter: blur(6px);
-  will-change: backdrop-filter;
   overflow: auto;
   transition: opacity 140ms ease, transform 140ms ease, visibility 140ms ease;
 }
@@ -2610,9 +2609,15 @@ button.map-qso-card:focus-visible {
 .map-overlay-filters.is-hidden {
   display: none;
 }
-/* With the filters collapsed the bar has no reason to span the map. */
+/* With the filters collapsed the bar has no reason to span the map.
+   It keeps both anchors and shrinks inside them, rather than dropping `left`
+   and being sized by shrink-to-fit: the anchored box is a size the browser
+   already knows, and an absolutely positioned, backdrop-filtered, composited
+   box being asked to size itself from its content is the shape of thing that
+   renders as nothing on engines other than the one it was written against. */
 .map-overlay-panel.filters-hidden {
-  left: auto;
+  width: fit-content;
+  margin-left: auto;
 }
 .map-overlay-actions {
   display: flex;
@@ -2739,7 +2744,6 @@ button.map-qso-card:focus-visible {
   box-shadow: 0 16px 30px rgba(0, 0, 0, 0.2);
   backdrop-filter: blur(6px);
   -webkit-backdrop-filter: blur(6px);
-  will-change: backdrop-filter;
   overflow: auto;
 }
 .map-band-legend.is-empty {
@@ -3892,7 +3896,18 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
   input.status-input, select.status-input { font-size: 1.1rem; }
   :root { --header-waterfall-overlap: 0rem; }
   .controls-tray-scroll { overflow-x: auto; }
-  .controls-tray { width: 100%; min-width: 0; padding-left: 0.85rem; padding-right: 0.85rem; }
+  /* A grid column sizes to its content by default, so one row wider than the
+     phone — the mode picker, six buttons across — dragged the whole tray out
+     with it and left the rest to be found by scrolling sideways. `minmax(0,
+     1fr)` lets the column be as narrow as the screen and the rows wrap inside
+     it. */
+  .controls-tray {
+    width: 100%;
+    min-width: 0;
+    grid-template-columns: minmax(0, 1fr);
+    padding-left: 0.85rem;
+    padding-right: 0.85rem;
+  }
   .freq-inline { gap: 0.5rem; flex-wrap: wrap; }
   .header-text { width: auto; min-width: 0; flex: 0 1 auto; }
   .header-main {
@@ -4068,10 +4083,18 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
     flex: 0 0 auto;
     min-width: 0;
   }
+  /* The rig's name is the widest thing in the bar and it does not need to be:
+     139 px of a 338 px bar went on it, and everything else was pushed into the
+     overflow menu to make room. Enough for a short name, ellipsised past that,
+     with the full name still in the menu it opens. */
   .header-rig-switch select,
   .header-style-pick select {
     width: auto;
     min-width: 0;
+    max-width: 6.5rem;
+    padding-right: 0.2rem;
+    font-size: 0.8rem;
+    text-overflow: ellipsis;
   }
   .header-bar-btn {
     flex: 0 0 auto;
@@ -4102,12 +4125,20 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
   .mult-col {
     min-width: 0;
   }
+  /* These are given the width of their column below; with padding on a
+     content box that is the column's width *plus* the padding, which is what
+     pushed the page itself sideways by a dozen pixels. */
   .wavelength-display,
   .sig-strength-display,
   .jog-step,
   .jog-mult {
+    box-sizing: border-box;
     width: 100%;
   }
+  .sig-strength-display {
+    min-width: 0;
+    font-size: 1.05rem;
+  }
   .jog-step button,
   .jog-mult button {
     flex: 1 1 0;
@@ -4958,9 +4989,15 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
 
 /* ── Phone layout (≤ 520px) ───────────────────────────────────────────── */
 @media (max-width: 520px) {
-  /* Single-column controls: jog first, then mode, then power */
+  /* Single-column controls: jog first, then mode, then power.
+     `nowrap` is the whole point of it. The base rule wraps, and a *column*
+     that wraps starts a second column when its items are taller than it is —
+     which put the transmit controls at x=400 on a 390 px screen, off the side
+     of a tray 354 px wide, reachable only by a horizontal scroll with nothing
+     to say it was there. */
   .controls-row {
     flex-direction: column;
+    flex-wrap: nowrap;
     align-items: stretch;
   }
   .controls-col-center {
@@ -6149,8 +6186,16 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
 .controls-tray { container-type: inline-size; container-name: controls; }
 .decode-history-table-wrap { container-type: inline-size; container-name: decode-table; }
 
-@container controls (max-width: 600px) {
-  .controls-tray .controls-row { flex-wrap: wrap; }
+/* Wrapping a narrow tray's columns onto more lines is right while the row runs
+   left to right. Below the phone breakpoint the row is a column, and wrap there
+   means "start another column" — which is how the transmit controls ended up
+   beside the tray instead of under it, off the side of the screen. This rule
+   outranks the phone one (two classes to its one) and sits later in the file,
+   so it has to exclude itself rather than be overridden. */
+@media (min-width: 521px) {
+  @container controls (max-width: 600px) {
+    .controls-tray .controls-row { flex-wrap: wrap; }
+  }
 }
 @container decode-table (max-width: 500px) {
   .decode-history-table th:nth-child(n+4),
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/package.json b/src/trx-client/trx-frontend/trx-frontend-http/frontend/package.json
index 60334cc3..429e0f2f 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/package.json
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/package.json
@@ -12,7 +12,7 @@
     "typecheck": "tsc --project tsconfig.json && tsc --project tsconfig.worker.json",
     "lint": "eslint \"src/**/*.ts\" \"tests/**/*.mjs\" build.mjs --no-error-on-unmatched-pattern",
     "test": "node --test tests/*.test.mjs",
-    "test:browser": "node tests/browser-smoke.mjs && node tests/spectrum-layout.mjs && node tests/decode-flow.mjs && node tests/tune-links.mjs",
+    "test:browser": "node tests/browser-smoke.mjs && node tests/spectrum-layout.mjs && node tests/decode-flow.mjs && node tests/tune-links.mjs && node tests/mobile-layout.mjs",
     "verify-generated": "npm run generate-types && npm run build && git diff --exit-code -- ../assets/web/generated src/api/generated.ts"
   },
   "devDependencies": {
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/mobile-layout.mjs b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/mobile-layout.mjs
new file mode 100644
index 00000000..dfcd987f
--- /dev/null
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/mobile-layout.mjs
@@ -0,0 +1,97 @@
+// SPDX-FileCopyrightText: 2026 Stan Grams <sjg@haxx.space>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+// What a phone gets. A page that scrolls sideways is a page with something on
+// it nobody will find: the transmit controls spent this whole period laid out
+// at x=400 on a 390 px screen, off the side of a tray 354 px wide, reachable
+// only by a horizontal scroll with nothing to say it was there.
+
+import assert from "node:assert/strict";
+import { chromium } from "playwright-core";
+import { startBrowser, startWebFixture } from "./web-fixture.mjs";
+
+/* global document, getComputedStyle */
+
+const PHONES = [430, 390, 360];
+
+const fixture = await startWebFixture({ spectrum: true, tx: true });
+const { browser, page, runtimeErrors } = await startBrowser(chromium);
+
+try {
+  for (const width of PHONES) {
+    await page.setViewportSize({ width, height: 900 });
+    await page.goto(fixture.origin, { waitUntil: "domcontentloaded" });
+    await page.locator("#content").waitFor({ state: "visible" });
+    await page.waitForTimeout(1800);
+
+    const layout = await page.evaluate((viewport) => {
+      const box = (element) => element.getBoundingClientRect();
+      // Anything laid out past the right edge of the screen.
+      const past = [];
+      const walk = (element) => {
+        const rect = box(element);
+        if (rect.width > 0 && rect.right > viewport + 1) {
+          past.push(`${element.tagName.toLowerCase()}${element.id ? `#${element.id}` : ""}`);
+        }
+        for (const child of element.children) walk(child);
+      };
+      walk(document.getElementById("content"));
+      const tx = document.getElementById("tx-power-col");
+      return {
+        documentScroll: document.documentElement.scrollWidth,
+        past: past.slice(0, 6),
+        txRight: tx ? Math.round(box(tx).right) : null,
+        txVisible: tx ? getComputedStyle(tx).display !== "none" : false,
+        rigSelect: Math.round(box(document.getElementById("header-rig-switch-select")).width),
+      };
+    }, width);
+
+    assert.equal(layout.documentScroll, width,
+      `the page scrolls sideways at ${width}px (${layout.documentScroll}px wide)`);
+    assert.deepEqual(layout.past, [],
+      `laid out past the screen at ${width}px: ${layout.past.join(", ")}`);
+    if (layout.txVisible) {
+      assert.ok(layout.txRight <= width + 1,
+        `the transmit controls end at ${layout.txRight}px on a ${width}px screen`);
+    }
+    // The rig's name was taking 139px of a 338px bar and pushing everything
+    // else into the overflow menu.
+    assert.ok(layout.rigSelect <= 112,
+      `the rig picker is ${layout.rigSelect}px wide at ${width}px`);
+  }
+
+  // Hiding the map's filters leaves the bar, and the bar has to still be
+  // there to bring them back — it carries the only button that does.
+  await page.setViewportSize({ width: 1400, height: 900 });
+  await page.goto(`${fixture.origin}/map`, { waitUntil: "domcontentloaded" });
+  await page.locator("#aprs-map .leaflet-pane").first().waitFor({ state: "attached" });
+  await page.waitForTimeout(1200);
+  await page.locator("#map-overlay-toggle-btn").click();
+  await page.waitForTimeout(400);
+  const collapsed = await page.evaluate(() => {
+    const panel = document.querySelector(".map-overlay-panel");
+    const style = getComputedStyle(panel);
+    const rect = panel.getBoundingClientRect();
+    const button = document.getElementById("map-overlay-toggle-btn").getBoundingClientRect();
+    return {
+      width: Math.round(rect.width),
+      height: Math.round(rect.height),
+      opacity: Number(style.opacity),
+      visibility: style.visibility,
+      display: style.display,
+      buttonWidth: Math.round(button.width),
+    };
+  });
+  assert.ok(collapsed.width > 0 && collapsed.height > 0,
+    `the collapsed bar measures ${collapsed.width}x${collapsed.height}`);
+  assert.equal(collapsed.visibility, "visible", "the collapsed bar is not visible");
+  assert.notEqual(collapsed.display, "none", "the collapsed bar is display:none");
+  assert.equal(collapsed.opacity, 1, `the collapsed bar is at opacity ${collapsed.opacity}`);
+  assert.ok(collapsed.buttonWidth > 0, "Show Filters has no size to click");
+
+  assert.deepEqual(runtimeErrors, []);
+} finally {
+  await browser.close();
+  await fixture.close();
+}
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/sstv.test.mjs b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/sstv.test.mjs
index 40c99dc4..bbcb8f35 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/sstv.test.mjs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/sstv.test.mjs
@@ -125,8 +125,11 @@ test("a picture arriving paints its rows as they come", async () => {
 test("a received picture is kept, shown, and linked by file name alone", async () => {
   const { runtime, element } = await loadPanel();
 
+  // Recent, not a fixed date: the panel drops anything older than the history
+  // retention window, so a picture stamped with the day the test was written
+  // passes until that day is a day ago.
   runtime.dispatch("sstv", {
-    ts_ms: Date.UTC(2026, 7, 5, 12, 0, 0),
+    ts_ms: Date.now() - 60_000,
     vis: 44, mode: "Martin M1", width: 320, height: 256, lines: 256, complete: true,
     path: "/home/op/.cache/trx-rs/sstv/SSTV_20260805T120000Z_14230000_Martin-M1.png",
   });