patch 1.45 hasnt fixed it, it just happened to me and Ive been running 1.45 for a few days now and just encountered the problem with the Imp Hero, lucky I saved in not too long before.

Happiness is relative: the less relatives you have, the happier you are. If at first you dont succeed; hide the evidence that you ever tried. When afraid or when in doubt: run in circles, scream and shout. Robert A Heinlein