Drag & create a single rectangle, actually creates a gazillion rectangles

[defaultpult5q6kq9s2]

WHY does the rectangle tool do this on my machine?! 

[Ton Frederiks]

That' can be done when you drag with the tilde key ~ down. Check if it is stuck,  if not, restarting your machine may help.

[femkeblanco]

I had this once.  Restarting the PC solved it.