[Qt-creator] Creator gets confused when switching kits

[Jason H]

When I switch, the run/build/debug buttons go grey. Then I get the build icon back. It hit it and it says:
16:29:41: Configuration unchanged, skipping qmake step.
16:29:41: Starting: "/usr/bin/make" -j 8
make: Nothing to be done for `first'.
16:29:42: The process "/usr/bin/make" exited normally.
16:29:42: Elapsed time: 00:00.

But the run/debug buttons never get enabled again. 

I switch kits a lot.