Cancel build freezes build

After upgrade to 5.0.1 when I cancel build, QtCreator semi-freeze, UI still responses, but I can not do anything else, only close/restart IDE.

It didn't happen even once during the last 2 years.

This morning I had QtCreator 5.0.0 on my Gentoo installation and there it worked fine, I decided to not report this issue until I test it on Gentoo.

I had upgraded QtCreator to 5.0.1 on Gentoo now and tried to cancel the cmake build and had the same problem like on windows, build freeze.
And now I also tested qmake build and it freezes too.
It is reproducible at 100% on windows and linux.