Good report. Triggering it by dismissing a menu dialog is new to me, but I certainly believe you.

The last time it happened here (two days ago) it laid waste to the entire tune, although it had just been saved. All chords and all melody were erased. The edits that had been made were of a few single notes scattered here and there through a whole chorus. Only a little work would actually have been lost -- the rest was on disk -- but it was all 100% gone from the screen before I got it back with the Edit menu and Rachael's workaround.

This thing is a serious bummer. It's affecting a lot of people, who may be assuming it's their own fault, as we both did the first time we saw it.

Larry
______