diff --git a/TESTING.md b/TESTING.md
index ce4bd6b..b21f77c 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -3200,12 +3200,16 @@ the per-section hand-off panel, was retired by S12 (#329): every section is nati
   again"; an Unload that found nothing loaded only reads the status again. At phone width
   the concept's 120px select cap cuts every engine label, so `#tag-model` alone keeps its
   natural width there and its row wraps the select under the text (`workspace.css`
-  `/* D132 */`); Existing tags stays as the concept draws it, cut at 390 as there. The
-  comparison maps `selectsFit` only for the engine select and measures each row's
-  `flexWrap` and whether its control sits under the text. Pinned by `auto-tagging matches
-  the concept` (both themes and sizes), `auto-tagging at 390 wraps only the engine row`,
-  `auto-tagging engine select fits at 320 wide` and the mutation check (it includes a
-  wrapped row) (system-tagging-concept.spec), and the model, Download, Unload and Preview
+  `/* D132 */`). The concept's cap cuts Existing tags too ("Replace after review"); by the
+  maintainer's decision (#398) that parity is not kept: `#tag-existing` never shrinks for
+  its row text and at phone width keeps its natural width beside the text (its row does
+  not wrap; the text column narrows). 1600 is as the concept draws it. The comparison
+  expects `selectsFit` true for every select and measures each row's `flexWrap` and
+  whether its control sits under the text. Pinned by `auto-tagging matches the concept`
+  (both themes and sizes), `auto-tagging at 390 wraps only the engine row`, `auto-tagging
+  selects fit every option at 390/320 wide` (every option of both selects, both themes, no
+  page scroll) and the mutation check (a wrapped row, a squeezed engine and Existing tags
+  select) (system-tagging-concept.spec), and the model, Download, Unload and Preview
   tests of workspace-system-tagging.spec.
 - **D133** (Auto-tagging, S11): a "Suggestions per image" row (`#tag-suggestions`,
   number 1–100, host key `autotag_suggestion_limit`) follows the two confidence rows:
diff --git a/tests/browser/system-tagging-concept.spec.mjs b/tests/browser/system-tagging-concept.spec.mjs
index b02f5a8..ff79595 100644
--- a/tests/browser/system-tagging-concept.spec.mjs
+++ b/tests/browser/system-tagging-concept.spec.mjs
@@ -127,9 +127,9 @@ function mapTaggingConcept(reference, { template, phone }) {
         actions: { ...reference.actions, buttons: [preview, ['Download again', ''], ['Unload', '']] },
         // D134: the prompt-tag batch, reviewed first.
         operations: [{ tree: ['div', 'div.row-actions'], title: 'Tag output images', description: BATCH, actions: [['Review', '']] }],
-        // D132: the engine select shows its whole chosen option at every width (at 390 the concept's 120px cap cuts it;
-        // `#tag-model` alone may grow there). Existing tags keeps the concept's own fit, cut or not.
-        selectsFit: reference.selectsFit.map((fit, index) => (index === 0 ? true : fit)),
+        // D132 (#398): every select shows its whole chosen option at every width (at 390 the concept's 120px cap cuts
+        // them; production lets each grow past it).
+        selectsFit: reference.selectsFit.map(() => true),
     };
 }
 
@@ -168,16 +168,28 @@ for (const theme of THEMES) for (const [width, height] of SIZES) {
     });
 }
 
-// D132 below the concept's smallest size: on a 320px phone the engine select still shows its whole option.
-for (const theme of THEMES) test(`auto-tagging engine select fits at 320 wide ${theme}`, async ({ page }) => {
-    await page.setViewportSize({ width: 320, height: 700 });
-    const production = await productionTagging(page, theme);
-    for (const model of ['hf', 'gguf', 'wd14-swinv2']) {
-        await page.locator('#workspace-main #tag-model').selectOption(model);
-        expect((await page.evaluate(measureTagging, '#workspace-main')).selectsFit[0], model).toBe(true);
-    }
-    expect(production.pageScroll).toBe(false);
-});
+// D132 (#398) at phone width and below the concept's smallest size: every option of every select, once chosen, shows
+// whole, with no page scroll.
+for (const theme of THEMES) for (const width of [390, 320]) {
+    test(`auto-tagging selects fit every option at ${width} wide ${theme}`, async ({ page }, testInfo) => {
+        await page.setViewportSize({ width, height: 844 });
+        await productionTagging(page, theme);
+        await page.locator('#workspace-main #tag-existing').selectOption('replace_after_review');
+        await page.locator('#workspace-main section.surface').screenshot({ path: testInfo.outputPath(`production-tagging-selects-${theme}-${width}.png`) });
+        const selects = page.locator('#workspace-main section.surface > .setting-row > select');
+        await expect(selects).toHaveCount(2);
+        for (let index = 0; index < 2; index += 1) {
+            const select = selects.nth(index);
+            const values = await select.evaluate(node => [...node.options].map(option => option.value));
+            for (const value of values) {
+                await select.selectOption(value);
+                const measured = await page.evaluate(measureTagging, '#workspace-main');
+                expect(measured.selectsFit, `${await select.getAttribute('id')}=${value}`).toEqual([true, true]);
+                expect(measured.pageScroll, value).toBe(false);
+            }
+        }
+    });
+}
 
 test('auto-tagging comparison detects mutations', async ({ page, request }) => {
     await page.setViewportSize({ width: 1600, height: 1100 });
@@ -222,6 +234,9 @@ test('auto-tagging comparison detects mutations', async ({ page, request }) => {
     const undoSqueeze = await mutate(page, { css: '#workspace-main #tag-model { max-width: 60px !important; min-width: 0 !important; }' });
     expect(await paths()).toEqual(expect.arrayContaining(['selectsFit.0']));
     await undoSqueeze();
+    const undoSqueezeExisting = await mutate(page, { css: '#workspace-main #tag-existing { max-width: 60px !important; min-width: 0 !important; }' });
+    expect(await paths()).toEqual(expect.arrayContaining(['selectsFit.1']));
+    await undoSqueezeExisting();
     // A row that wraps where the concept's does not.
     const undoWrap = await mutate(page, { css: '#workspace-main .setting-row:has(> #tag-existing) { flex-wrap: wrap; }' });
     expect(await paths()).toEqual(['rows.1.flexWrap']);
@@ -233,14 +248,14 @@ test('auto-tagging comparison detects mutations', async ({ page, request }) => {
     expect(diffInventory(expected, await measure())).toEqual([]);
 });
 
-// D132 at phone width, unmapped: only the engine row wraps; Existing tags keeps the concept's cut select.
+// D132 at phone width: only the engine row wraps; Existing tags grows beside its text instead (#398).
 test('auto-tagging at 390 wraps only the engine row', async ({ page, request }) => {
     await page.setViewportSize({ width: 390, height: 844 });
     const concept = await conceptTagging(page, 'dark');
     const production = await productionTagging(page, 'dark');
     expect(diffInventory(mapTaggingConcept(concept, await savedTemplate(request, page)), production)).toEqual([]);
     expect(production.rows.map(row => row.flexWrap)).toEqual(['wrap', 'nowrap', 'nowrap', 'nowrap', 'nowrap']);
-    expect(production.selectsFit[1]).toBe(concept.selectsFit[1]);
+    expect(production.selectsFit).toEqual([true, true]);
 });
 
 /** Runs in the page: the open review dialog: its title, body and the concept's tokens. */
diff --git a/web/js/workspace/workspace.css b/web/js/workspace/workspace.css
index 8d29e3f..fedd3ed 100644
--- a/web/js/workspace/workspace.css
+++ b/web/js/workspace/workspace.css
@@ -433,10 +433,13 @@ pre.prompt-text { font: inherit; font-size: 12px; line-height: 1.75; margin-bloc
 }
 /* D132: at phone width the concept's 120px cap cuts every engine label ("WD14 SwinV2 · ~400 MB"); the Tagging model
    select alone keeps its natural width there (its widest engine label) and, with no room beside the row text, wraps
-   under it. */
+   under it. Existing tags (#398) never shrinks for its row text and, past the cap, keeps its natural width beside the
+   text ("Replace after review"), bounded by its row like the engine select. */
+.setting-row #tag-existing { flex-shrink: 0; /* D132 */ }
 @media (max-width: 700px) {
   #workspace-main .setting-row:has(> #tag-model) { flex-wrap: wrap; /* D132 */ }
   #workspace-main .setting-row #tag-model { flex-shrink: 0; max-width: 100% !important; /* D132 */ }
+  #workspace-main .setting-row #tag-existing { max-width: 100% !important; /* D132 */ }
 }
 
 /* D109: System › Diagnostics & logs' added Lines field sits in the concept's toolbar like its Level select, and a value