This issue has happened to me in a few of the previous versions so i thought I'd report it.
The option box (I don't know how else to describe it!) that comes up when there is a right-click gives the options and then does not disappear once an option has been picked. Even when the option has been selected and activated (e.g. dictionary look-up) the option box remains. I have then had to restart the program to get rid of it.
The particular program I was using this time was the Baker Exegetical Commentary on the NT: 1 Corinthians (Garland).
Many thanks in advance.