tab switcher is jumping 2-3 tabs ahead instead of the next tab

[mr-e7ro7]

Captchas

• [x] I have read the instructions.
• [x] I have searched existing issues and avoided creating duplicates.
• [x] I am not filing an enhancement request.
• [ ] I have checked that this issue cannot be reproduced on Mozilla Firefox.
• [x] I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

the tab switcher is moving to the position of the mouse before the mouse is moved. if my mouse is in the middle of the screen, the tab switcher will jump to that position(3-4 tabs) instead of one tab.

the position of the mouse should only register if the mouse is moved. not before

https://github.com/user-attachments/assets/5a23f210-ac63-47d6-b4d4-67e583d80c92

Version

1.10.3b

What platform are you seeing the problem on?

macOS - aarch64

What component is this issue related to?

Other

Relevant log output if applicable

[dosubot[bot]]

Hi, @mr-e7ro7. I'm Dosu, and I'm helping the desktop team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• Problem with the tab switcher on macOS version 1.10.3b.
• Tab switcher jumps 2-3 tabs ahead instead of moving sequentially.
• Caused by the tab switcher incorrectly registering the mouse's position.
• No comments or additional activity on the issue yet.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of the desktop repository by commenting here.
• If there is no further activity, this issue will be automatically closed in 7 days.

Thank you for your understanding and contribution!

[Leblayd]

It is 100% still relevant

(And replicable on Linux as well, for the record. It's platform agnostic.)

[Propheticus]

@Leblayd strange, I can't reproduce. When holding my mouse still it does not go to the tab that is shown under it in the switcher, only when I move the mouse it selects.

[Perchycs]

It doesn't seem to do it on windows, but reproducible 100% of the time on my macbook

[Propheticus]

Ok, so Linux and Mac it is. Not quite agnostic, but Unix-like OS specific. I'll set to to-do, since Mauro has been fixing a lot of these small but annoying quirks lately.

[Leblayd]

I can confirm it works on Windows and broken on the other two—and thank you

[dosubot[bot]]

Hi, @mr-e7ro7. I'm Dosu, and I'm helping the desktop team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• The tab switcher on macOS aarch64 jumps 2-3 tabs ahead due to incorrect mouse position registration.
• @Leblayd confirmed the issue persists and is replicable on Linux.
• @Propheticus and @Perchycs noted it does not occur on Windows, indicating it may be specific to Unix-like systems.
• The issue is set to "to-do" for further investigation as similar quirks are being addressed.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of the desktop repository by commenting here.
• If no further updates are provided, the issue will be automatically closed in 7 days.

Thank you for your understanding and contribution!

[Perchycs]

Still have this issue on MacOS latest version

[mr-e7ro7]

bro this is the third time Dosu gave me a summery.

Dear Dosu, Yes , this issue is still very relevant

thank you mr-e7ro7

[dosubot[bot]]

Hi, @mr-e7ro7. I'm Dosu, and I'm helping the desktop team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• The tab switcher on macOS (version 1.10.3b) jumps 2-3 tabs ahead due to incorrect mouse position registration.
• The issue is replicable on Linux but not on Windows, indicating it may be specific to Unix-like systems.
• It has been marked as "to-do" for further investigation, with similar quirks being addressed.
• Despite being marked as stale before, you and others have confirmed its continued relevance.

Next Steps:

• Please let us know if this issue is still relevant to the latest version of the desktop repository by commenting here.
• If there is no further input, the issue will be automatically closed in 7 days.

Thank you for your understanding and contribution!

[Perchycs]

yes still relevant. just like last month

[PatelRavip1]

Hii, I just check it on Linux it is working no issues.

your issue could be mouse u r using for tacking mouse movement this web site that tacks mouse movement see something comes up on that.

https://github.com/user-attachments/assets/259109ad-2a16-4a03-a97c-b641384f68c6

[mr-e7ro7]

Hii, I just check it on Linux it is working no issues.

your issue could be mouse u r using for tacking mouse movement this web site that tacks mouse movement see something comes up on that. 2025-08-08.19-37-07.mp4

im on mac. and i still have the problem. i also dont use an external mouse. you can see my mouse in the original video

[Perchycs]

I think the issue is only on Mac, and like @mr-e7ro7 I also have it when using the trackpad.

I tested with an external mouse and still have the issue.

[chrisdeeming]

Can confirm I also get this issue

[JSGRD22]

This issue can be reproduced in Firefox and is likely an issue on their end. Please report to bugzilla as necessary instead.

[Perchycs]

I found this suggestion request on the firefox forums for anyone who wants to report. CTRL + TAB preview should ignore mouse pointer location unless moved