IDE 1.8.1 not responding to mouse input on Win7

I'm just getting started with Arduino and am having some trouble with the IDE. I just installed version 1.8.1 and can't navigate the UI because mouse clicks are being completely ignored. I can use the keyboard, but some UI elements require mouse input (like scrolling the error output).

I was able to successfully modify and upload the Blink example, but I'm afraid I won't be able to go much further without a fully functional IDE.

I'm running Win7 x64 on a Core i5.

Thanks for the help.

I have the same problem.

For me it fixed itself after resetting Windows.