Incorrect tab drawing?

Hello,

Please take a look at the left border of the left tab. It seems to me it is drawn incorrectly.

Tabs assume the thing to the left of them has a border and avoid doubling up on it, but it looks like there is a toolbar to the left and Preferences / Toolbars / Appearance / Display toolbar top and bottom borders is turned off (it affects left/right borders for vertical toolbars).

Hi,

Right, this is how things are set up on my side. Still, it looks a bit off.