STR that may very well not work for you, but is 90% reproducible for me in my main profile:
- Download 2 different files using latest Nightly
- Restart Nightly, wait a few seconds for it to fully load (important)
- The first downloaded item is not focusable/selectable (though double or right clicking works), the second item is. Closing the Library window and re-opening will make the item focusable.
I can't reproduce on a fresh profile. I've tried copying places.sqlite from my main profile over to the new profile and restarted- still not reproducible.
On my main profile I've tried disabling all extensions and restarted- this still occurs afterwards.
Nothing interesting in the browser toolbox when I do it on my main profile, just the following:
Array.forEach is deprecated; use Array.prototype.forEach instead
Array.every is deprecated; use Array.prototype.every instead