diff --git a/frontend/src/components/Combobox.tsx b/frontend/src/components/Combobox.tsx
index 4325b3ac..9cf34c78 100644
--- a/frontend/src/components/Combobox.tsx
+++ b/frontend/src/components/Combobox.tsx
@@ -220,7 +220,11 @@ export default function Combobox({
               ? (placeholder ?? t("common.search", { defaultValue: "Search" }))
               : ""
           }
-          className="min-w-16 flex-1 bg-transparent px-1 py-0.5 text-sm outline-hidden placeholder:text-muted/60"
+          // min-w-8 (not -16): flex line-packing sizes the input at its MIN-width, so a wide 64px floor
+          // made a single chip + the reserved input + the chevron overflow a narrow rail field — wrapping
+          // the chevron to a second line while the (empty) input filled the first. A small floor keeps the
+          // chip + input + chevron on one line; flex-1 still grows the input to fill whatever room is left.
+          className="min-w-8 flex-1 bg-transparent px-1 py-0.5 text-sm outline-hidden placeholder:text-muted/60"
         />
         <ChevronDown className="pointer-events-none mr-0.5 h-3.5 w-3.5 shrink-0 text-muted" />
       </div>