I set up iTerm2 colours/backgrounds, however the first tab is always "lighter" (i.e. more transparent) than all the other tabs. When I set transparency in the profiles, I can see every tab except the first one adjusting. Is it some bug or some setting I'm missing?
Just sorted this myself. The trick is in "Preferences > Profiles > Hotkey Window * > Window", uncheck the box for "Open in a new window, never in a tab"
* Note that "Hotkey Window" is just how profile is called for me (using a dropdown terminal), if might be "default" or something else. Try each profile until the one you want is affected.