Reattached tmux tabs are red in 3.6.4

  • iTerm2 version: 3.6.4
  • OS version: 15.7.1

Detailed steps to reproduce the problem:

  1. Upgraded from 3.6.2 to 3.6.4.
  2. ssh to a Linux server and run 'tmux -CC attach'

What happened: Tabs in the new tmux window unexpectedly have a red background

What should have happened: Tabs look normal

I can right-click on a tab and choose tab color none to fix a single tab (as shown in tab 7 in the screenshot). Notably, if I choose red from that menu, it is a different shade of red, for both active and inactive tabs.

Screenshot_2025-10-08_at_5.16.19_PM

Edited by Andrew Daugherity