Just to clarify, the one I linked is beta of the upcoming v4 - is that one working fine?
The ~V3.108 from your original post will be replaced. V3 branch won't get the new window type because it used some 3rd party libraries for drawing window and I removed those in V4
The beta's option to register those is disabled until the official release
But menu being unresponsive is strange, as menu has not been changed much and mostly icons were replaced... so I have to see if anybody else says they have issue with that menu