Describe the bug
I am trying to look at the state in the Time Machine backup of Macpass (which is enabled in Database Settings > Advanced > Enable Entry History). The database has a keyfile but trying to choose one drops out of Time Machine so can never look at the chosen historical copy. Subsequent TM attempts have same behaviour (so the Keyfile is not cached like in the 'main' non-historical version).

To Reproduce
Steps to reproduce the behavior:
0. Add a keyfile to the Database Security settings

1. Turn on Entry History ( Database Settings > Advanced > Enable Entry History).
2. Wait a period of time greater than TM backup backups and in this time make changes to an entry
3. With MacPass the foreground app go to Time Machine (Cmd-Space is fine)
4. Select a historical entry. It should show the password entry.
5. Click on Keyfile and it will open a dialog to select a keyfile
6. The historical entry will disappear leaving you at most recent / latest copy

Expected behavior
The keyfile dialog dialog shouldn't escape currently selected historical entry
OR
After selecting keyfile the previously selected historical entry is once again displayed

Screenshots
Not easy to do since all windows look the same

Desktop (please complete the following information):

• macOS: 11.6.2
• Version: 0.7.12

Additional context
none