Bug? Mouse Cursor Disappears

in New Users
Sometimes when I use my mouse to tune the dials when I am posing a scene, the screen will flash and then my cursor disappears and I can't figure out how to get it back. I have to save my scene using the "alt s,", exit the prorgam and start over.
This just happened three times in a row and took up a good 10 minutes just to position a hair prop.
Is this a bug, or is there a way to get the cursor back when this happens?
Comments
I have that happen to me sometimes. I have a razer mouse with programmable thumb buttons and somtimes when I'm dragging something I'll accidentally click one of them. When I do this, mu cursor will dissapear from Daz and I need to restart it. I've yet to figure out what key will bring the mouse back.