ChatGPT FAQ: How to Fix Failed Model Switching and a Disappearing Toolbar

When using ChatGPT, the most infuriating thing is often not the quality of the answers, but “features suddenly disappearing” or “not being able to switch models.” Below is a consolidated guide to common issues such as failed model switching, missing toolbar, and messages getting stuck, along with an actionable troubleshooting order to help you avoid detours.

Model switching fails: clicking does nothing or it automatically switches back

When ChatGPT model switching fails, don’t keep clicking repeatedly. First, refresh the page and log out and back in—many cases are caused by session state not syncing. Next, check whether you have any browser script-type extensions enabled (ad blockers, privacy plugins); such extensions can block ChatGPT’s frontend requests.

If it only fails in one browser, test in a Chrome/Edge incognito window; this quickly tells you whether it’s a cache issue or a plugin issue. If it’s still unstable, check the OpenAI service status page (status.openai.com). When the server side is fluctuating, switching models is more likely to fail.

Toolbar disappears: file, image, or voice entry suddenly not visible

A common reason ChatGPT’s toolbar entries “aren’t visible” is page zoom or the window being too narrow. First reset browser zoom to 100%, then collapse/expand the sidebar once. On mobile, it’s recommended to fully close the app in the background and reopen it to avoid the UI state getting stuck.

If you use ChatGPT on a corporate network or under a special proxy environment, some static resources may not load completely, which can also appear as a missing toolbar. In that case, test once using a mobile hotspot to quickly determine whether it’s network-policy blocking.

Sending gets stuck or keeps spinning: did the request not go out, or was it interrupted?

If a ChatGPT conversation keeps spinning, first copy what you just typed, then refresh the page and resend it to avoid losing your work. Next, clear your browser cache and cookies (clearing only ChatGPT-related sites is fine too). This is the easiest way to fix “request state getting messed up.”

If you frequently see “send failed/request error,” splitting the same text into shorter chunks and reducing the amount of text pasted at once can also lower the chance of triggering temporary risk controls or timeouts. You can also compare tests across different network environments—many “stuck” cases are actually due to an unstable network path to the server.

Recommended troubleshooting order: from low cost to high cost

It’s recommended to troubleshoot in the order “refresh → log out → incognito window → disable extensions → change network → change device,” which is the fastest way to pinpoint the source of ChatGPT issues. Only then consider reinstalling the app or changing browser settings, because that step costs the most and doesn’t necessarily have a higher hit rate.

If you can reliably reproduce a specific issue (for example, switching to a certain model always fails, or a certain entry always disappears), write down the browser version, OS version, and reproduction steps; your feedback will be more effective. Overall, most ChatGPT anomalies can be resolved by clearing plugins and cache.