In CS4 and CS5, on two different computers (XP and Win7), the same problem happens: In text mode (the T tool active), the opacity and the font size controls on the control bar occasionally get tangled up with each other. It looks like the context-switching logic is leaving certain controls active when they should be hidden to make room for the text controls.
I've reported this as a bug, although the bug form doesn't allow pictures.
Has anyone else noticed this? Is there a known work-around? It's actually quite a nuisance, although obviously I can use the type panels.