diff --git a/frontend/src/features/model-servers/ModelServersPanel.tsx b/frontend/src/features/model-servers/ModelServersPanel.tsx
index e5236c1..c24f41b 100644
--- a/frontend/src/features/model-servers/ModelServersPanel.tsx
+++ b/frontend/src/features/model-servers/ModelServersPanel.tsx
@@ -661,6 +661,7 @@ function ServerEditor({
               value={argsText}
               placeholder="--flash-attn --parallel 2"
               onChange={(e) => setArgsText(e.target.value)}
+              onKeyDown={(e) => e.stopPropagation()}
               onBlur={commitArgs}
             />
             {reservedHits.length > 0 && (
diff --git a/frontend/src/features/model-servers/modelServers.test.tsx b/frontend/src/features/model-servers/modelServers.test.tsx
index 872f941..0c78e3a 100644
--- a/frontend/src/features/model-servers/modelServers.test.tsx
+++ b/frontend/src/features/model-servers/modelServers.test.tsx
@@ -211,6 +211,30 @@ function renderPanel(modelServer = new MockModelServerGateway()) {
   };
 }
 
+function renderPanelInsideSpaceTrap(modelServer = new MockModelServerGateway()) {
+  const gateways = { modelServer } as unknown as Gateways;
+  function Harness() {
+    const vm = useModelServers();
+    return (
+      <div
+        onKeyDown={(event) => {
+          if (event.key === " ") event.preventDefault();
+        }}
+      >
+        <ModelServersPanel vm={vm} />
+      </div>
+    );
+  }
+  return {
+    modelServer,
+    ...render(
+      <DIProvider gateways={gateways}>
+        <Harness />
+      </DIProvider>,
+    ),
+  };
+}
+
 describe("ModelServersPanel wizard (F35 V2)", () => {
   it("declares a Hugging Face server end-to-end with a V2 payload", async () => {
     const { modelServer } = renderPanel();
@@ -303,6 +327,20 @@ describe("ModelServersPanel wizard (F35 V2)", () => {
     });
   });
 
+  it("does not let surrounding keyboard handlers swallow spaces in the extra args field", () => {
+    renderPanelInsideSpaceTrap();
+    fireEvent.click(screen.getByLabelText("add model server"));
+
+    const args = screen.getByLabelText("extra arguments") as HTMLInputElement;
+    const accepted = fireEvent.keyDown(args, {
+      key: " ",
+      code: "Space",
+      charCode: 32,
+    });
+
+    expect(accepted).toBe(true);
+  });
+
   it("blocks auto-start until a model source is set", () => {
     renderPanel();
     fireEvent.click(screen.getByLabelText("add model server"));