I am not sure if this is an issue or a feature I am not using correctly.
I have noticed my left click stop working in looking glass while the mouse is still working. I noticed today it is when I was Ctrl + Left Click in Visual Studio on a class. If it is an issue I can still right click and select go to definition so not a big deal.
I could not find anything in the docs about Ctrl + Left Click, does this start a macro record or something?