Is there an existing issue outlining your problem?

• I am using the latest version of the provided userstyle.
• I have searched the existing issues and they do not solve my problem.

What userstyles are you seeing the problem on?

lbl:whatsapp-web

Describe your problem.

Elements in the sidebar are unthemed in lots of tabs

Attach screenshots.

Chats tab:

Settings tab:

What browser(s) are you seeing the problem on?

Firefox v138.0.1

Any additional comments?

No response