Mouse cursor disappears in Dex when opening content in fullscreen

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Description of the issue: Mouse cursor disappears in Dex when using various websites and the content is in fullscreen mode. Namely Youtube and a remote desktop app.

How can this issue be reproduced?

  1. Open Youtube in Brave on Samsung Dex.
  2. Play video in fullscreen mode.
  3. Cursor disappears.

Expected result: Cursor doesn’t disappear.

Brave Version( check About Brave): Brave 1.76.82, Chromium 134.0.6998.178

Mobile Device details Galaxy S25, Android 15, DeX 4.8.16.

Additional Information: Doesn’t happen in other apps so it’s not a Dex issue.