[BUG] Mouse cursor fails to auto-hide on YouTube, Dailymotion, etc. while grouped tabs are active

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1

On Linux with X11/Wayland, Brave Browser fails to keep the mouse cursor hidden when watching YouTube, Dailymotion videos in full-screen or normal embedded mode.
The cursor initially disappears as expected, then reappears after ~2–3 seconds and stays visible, even without moving the mouse.
This behavior does not occur in Ungoogled Chromium on the same system, suggesting it is specific to Brave’s modifications (likely privacy shields or event handling) or newer version of Chromium.

Steps to reproduce

  1. Launch Brave Browser on Linux (X11).
  2. Navigate to https://www.youtube.com.
  3. Play any video and enter full-screen mode.
  4. Stop moving the mouse and observe.

Actual result

The cursor initially disappears as expected, then reappears after ~2–3 seconds and stays visible, even without moving the mouse.

Expected result

The cursor should hide after a short delay and remain hidden until the mouse is moved again, matching normal YouTube behavior on Chromium or Firefox.

Actual Behavior:

The cursor disappears for about 1–2 seconds, then reappears and remains visible, despite no mouse movement.

This happens only in Brave.

Chromium on the same machine does not show this issue.

Reproduces how often

Easily reproduced

Brave version (brave://version info)

The latest Brave Flatpak build on Chromium 138.0.7204.157

Also tried to clear the cache, delete cookies but it doesn’t help, even switched to a different Desktop environment and still the same.

Ungoogled Chromium
Version 138.0.7204.96 (Official Build, ungoogled-chromium) (64-bit)

No issues whatsoever.

UPDATE

Rolled back to earlier version
Brave 1.80.120 (Official Build) (64-bit)
Chromium: 138.0.7204.101

Everything works! The issue is with Brave browser version 1.80.122

UPDATE 2

Flatpak version of Ungoogled Chromium just got updated to the same version as Brave’s version 138.0.7204.157 and everything works well. So now it’s confirmed the issue only happens in Brave browser.

FINAL UPDATE (BUG FOUND)

That’s a bug indeed, I was able to reproduce it, after creating a group of tabs and leaving them active along with other tabs while watching a YouTube video - causes issues with the cursor to become active! Once I close that group of tabs or delete it the issue disappears.

ADDITIONAL INFORMATION REFERRING THE BUG

To narrow down this issue and help to identify the cause, it doesn’t happen just to any group of tabs but to a specific group of tabs that has TradingView website in it, I created it a couple of times with that website and every time it causes the issue with the cursor on YouTube, so what causes exactly no clue but I’d like to confirm that the same group of tabs on Ungoogled Chromium causes the issue now too, so it seems to be a Chromium-wide bug.

2

@c1ph3rbash what desktop environment are you using when you see this issue?

3

Cinnamon by default X11, also tried in Cosmic (Wayland)

4

@Mattches the actual Flatpak version is Brave browser version 1.80.122 build on Chromium 138.0.7204.157 and as I mentioned in the update everything is ok with an older Brave version 1.80.120

5

Thank you for the information. I’ve tried testing this on my end on my Linux VM but don’t see the issue you’re seeing. I’ve asked some team members to test this as well to see if they can reproduce.

6

I just reinstalled the browser from the scratch and everything works, I didn’t change anything before, no clue what was the cause but now it’s ok.

1 Like
7

Something really weird is happening, the issue started to happen again after an hour or so.. I don’t know maybe it’s a bug in a Flatpak version or bug with browser version 1.80.122.. Also I noticed now it can take up to 5 seconds sometimes and then cursor reappears.

8

that’s a bug in Brave browser, check my update, I was finally able to reproduce it.

9

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