Captchas

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

What happened?

Normally, when drag a tab to the right sdie of current page to mak split window, we can see it like:

But with native sidebar panel enabled on right side, it will become this:

Here, the browser will try to put tab to right side of sidebar(in this case, my bookmark tree) and end up failing to make split window

Version

1.10.3b

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Split View

Relevant log output if applicable