mouse becomes non-responsive in drawing area after inserting text in 2015 x64

I just installed the 64bit version on my system, I'm not sure which version, since the help about doesn't tell you. I just says 2015 x64.

My problem is this, I start putting in text, and suddenly, the mouse in the drawing area disappears. I can mouse over the menu, outside of the drawing area and everything is fine.

I have to save the file I'm working on, close it and reload it, to get the mouse to work inside the drawing area again.

Is anyone having that trouble too?

I also run SolidWorks on this machine, if that could have anything to do with it.

Since I have a lot of text to add to this sketch, this is becoming extremely annoying. Any suggestions would be helpful.

Thanks.