Why do external subtitles work this way?
.ass + .srt = is displayed
.ASS .Ass + .SRT .Srt = is not visible (as if it does not exist)
There are no such restriction for video files:
.mkv .MKV .Mkv (.mKv .mkV .MKv .mKV) is displayed.
Infuse Pro 6 + Apple Tv 4K