Yes I did as well. It only effected the font when viewed in corel for me. I found that some did the same thing you did on the corel boards. I never had to unistall a update but once I had opened up photoshop and viewed some of the fonts I did not have any issues back in corel. It was a bery confusing thing to happen for sure.
system is 64bit corel x6 and photoshop cs5