ZBrushCentral

Zooming

I have zbrush 4r8. The last couple of days it has started to randomly zooming by itself. It maximizes the zoom and slowly zooms in. It happens while I am in the midfld of working on my model. When it reaches maximum zoom I try to fit the frame(fit mesh to view) then it never stops thinking. I have lost work because of this. Can anyone tell me why it might do this? Thanks ahead for any help.

Mac or Windows?
Is it a specific brush being used?
Do you have any plugins installed that aren’t included with ZBrush?

Windows
I am using a standard brush. No extra plugins. Just the ones that came with the program. It does not do it all the time. I also noticed when I try to save the file it will add a bunch of + to the title.

It sounds like you have the + key on your keyboard stuck or behaving erratically. (+ is the hotkey for zooming in.)

Thank you very much. My keyboard is being replaced.