Choosing Fonts Problem

I have always had to pick the font menu twice to get it to stay up. But now there are issues where it will get into a mode that it never stays and I have to close out scrivener and open it back up to get it to quit messing up.

Normally this is what happens:

highlight text,
choose font menu,
It flickers and disappears.
choose the font menu again.
typically it stays but still annoying I had to do it twice.

Now about 35% of the time:

  1. highlight text,
  2. choose font menu,
  3. It flickers and disappears.
    go to line 2 for an endless loop