zen-remove-split-view-tab-highlight
Mod for Zen Browser that removes the border highlight on the active tab in split view.
Before:

After:

Removes the border highlight around the active tab while using split view.
Install with Kuro Browser
Open this page in Kuro and the button here adds NoHighlightSplit in one click.
Mods apply right away. Switch them off or change their options any time in Kuro’s settings.

Mod for Zen Browser that removes the border highlight on the active tab in split view.
Before:

After:
