Lyrics disappear when typing in v. 2.1
About every 10th time I type some lyrics in v2.1, as I hit the space bar or hyphen to move to the next note, the cursor jumps up toward the note above, and what I type shows no text.
The cursor remains in typing mode as an insertion blinker on a blank area above the line of verse 1 that I was typing, but further keystrokes don't show any characters on the screen.
I have to hit Escape, then get back to that note and reenter Lyric typing mode, then characters appear as expected.
What is the solution?