# When the page flickers or shows a browser error

Client-side page errors can be caused by stale tabs, browser extensions, cached scripts, or temporary deployment changes.

## What you may see

- A brief layout flicker when the page loads
- A page error after clicking a button
- A browser console or support report mentioning hydration
- A Sentry or support reference to a client-side error

## What this means

The browser had trouble matching the first page it received with the interactive page that loaded afterward, or a client-side script failed.

Historically, a known hydration mismatch caused brief page flicker. That issue has been fixed, but similar browser-side errors can still be caused by stale tabs, browser extensions, cached scripts, or temporary deployment changes.

## What to do

- Refresh the page.
- If the page is still broken, open it in a private window.
- Disable browser extensions that modify pages, translate content, block scripts, or inject password tools.
- Retry the action that failed.