diff --git a/apps/renderer/src/lib/error-parser.ts b/apps/renderer/src/lib/error-parser.ts
index 1990fa2e1..50ff42d71 100644
--- a/apps/renderer/src/lib/error-parser.ts
+++ b/apps/renderer/src/lib/error-parser.ts
@@ -7,6 +7,8 @@ import { toast } from "sonner"
 
 import { CopyButton } from "~/components/ui/code-highlighter"
 import { Markdown } from "~/components/ui/markdown/Markdown"
+import { isDev } from "~/constants"
+import { DebugRegistry } from "~/modules/debug/registry"
 
 export const getFetchErrorMessage = (error: Error) => {
   if (error instanceof FetchError) {
@@ -62,7 +64,7 @@ export const toastFetchError = (
     ..._toastOptions,
     classNames: {
       toast: "items-start bg-theme-background",
-      title: tw`-mt-0.5`, // to align with the icon (actually cut the top space from line-height)
+
       content: "w-full",
       ..._toastOptions.classNames,
     },
@@ -95,3 +97,19 @@ export const toastFetchError = (
     })
   }
 }
+if (isDev) {
+  DebugRegistry.add("Simulate request error", () => {
+    createErrorToaster(
+      "Simulated request error",
+      {},
+    )({
+      response: {
+        _data: JSON.stringify({
+          code: 1000,
+          message: "Simulated request error",
+          reason: "Simulated reason",
+        }),
+      },
+    } as any)
+  })
+}
diff --git a/apps/renderer/src/modules/app/EnvironmentIndicator.tsx b/apps/renderer/src/modules/app/EnvironmentIndicator.tsx
index 981e5fef6..c4f670a3d 100644
--- a/apps/renderer/src/modules/app/EnvironmentIndicator.tsx
+++ b/apps/renderer/src/modules/app/EnvironmentIndicator.tsx
@@ -35,8 +35,8 @@ export const EnvironmentIndicator = () => {
                   <div className="flex flex-col gap-2">
                     {Object.entries(actionMap).map(([key, action]) => {
                       return (
-                        <div key={key} className="flex items-center gap-2">
-                          <span>{key}</span>
+                        <div key={key} className="flex w-full items-center gap-2">
+                          <span className="flex flex-1">{key}</span>
                           <Button variant="outline" type="button" onClick={() => action()}>
                             <i className="i-mgc-play-cute-fi size-3" />
                             <span className="ml-1">Run</span>