Hey there,
Apologies if this has been asked before, but I’m having a bit of a gnawing issue that continues to irritate, and I was wondering if this has happened to anyone else.
When sculpting, I use my wacoms touch strip bound to do either [ or ] so I can change my pen size on the fly. I imagine most do! But I find that after using zbrush for a while, I eventually seem to… Somehow toggle something, seemingly in the program, that stops this from working.
Specifically, when I use the touch strip either way, it seems to think I’m holding down Alt. the cursor will change to the mask brush briefly instead of the pen size changing. Pressing ] and [ on the keyboard itself works as normal.
I don’t have Zbrush’s program set up as a seperate type of control in my wacom preferences itself, so [ and ] are the default behavior so far as the tablet itself is concerned. This happens both when I am using my intuos on the run and my cintiq at home.
Has anyone else had this? What in the world am I doing to cause this? 
Thanks,
Pk