Tab left side border

[w64bit]

Create 3 tabs. In total will be 4.
Hover tab 2 with mouse.
Left side has no border line.
Can it be fixed?

[void]

Could you please send a screenshot?

Is the hot tab under the mouse cursor not showing the left border?

[w64bit]

Is the hot tab under the mouse cursor not showing the left border?

Yes

[void]

Everything is using the wrong part id for the tab item.

Everything is currently using TABP_TABITEM which does not have a left border.
The next update will use TABP_TOPTABITEMLEFTEDGE which includes the left border.

Thank you for bringing the issue to my attention.