"waiting for builds to finish" When no builds are running

Currently my system is reporting as if I have too many builds running. I am allowed to 2 at the moment. But still, we get stuck in this que problem.

So I am now stuck and cannot trigger any builds as its currently reporting that I have builds running.

This only happens if I manually click “cancel” a build.
If I run a “re-build” the error doesn’t occur.