If I have two typefaces open simultaneously in FontLab 5.04 for Windows, I suddenly can't see preview/metrics windows from one of the them if the other is active, it just disappears until I give that typeface focus again (make that font window active). This suddenly happened yesterday, and I can't find out how to make the windows behave normally again. I might have involuntarily hit some letter combination that disables metrics windows from different typefaces simultaneously, and can't reset it. Any help highly appreciated.