Very sorry for not understanding what issue you were having. Now I understand that your dropdown menus are not "drop-downing."
Unfortunately, there are only two things you can do about this at this point in time as this is a bug in the current version. Until Adobe sends out an updated version with a fix, all you can do is to (1) revert back to an earlier version, or (2), use your arrow keys to go up and down the potential options.
Yeah, it sucks.
And again, I'm sorry I did not understand your issue.