In (9.0.26174.12303, 2026-06-23) the mousewheel doesn’t work anymore for tab switching.
Only when the mouse is over the tabs.
Hi Charles -
If I understand that correctly, this works fine here:

-wim
Seems I didn’t express myself clear enough.
Hi Charles -
Thanks for the clarification.
I now tried on the oldest version of the Rhino 9 WIP that hasn’t expired and that seems to always have been the case.
At any rate → RH-96499 Toolbar: No Tab Scroll when over Icons
-wim
When this is functional again, then it could also help for #4 in this:
Yes I know that would be new, it wasn’t there ever before.