The problem is that navigation and other functions are disabled:
- Left/Right keys don't work
- PgUp/PgDn don't work
- the left/right arrows in the toolbar are greyed out.
- Del doesn't bring up the delete dialog (it works fine in the Browser view)
- F2 doesn't rename (it also works fine in the Browser view)
Version 0.93 64bits (Jan 31 2019)
(I dislike the HEIC format, but that's how my friend's iPhone shoots, and I have to put up with it)