In many Japanese shows, there will be text at the bottom of the screen when they want to emphasize something that was said. To avoid hiding it, Netflix will move its subtitles to the top of the screen (and sometimes to the side).
When that happens, LR will not show any subtitles, even though it could get it. I am guessing the format of these subtitles is slightly different and the code is not able to handle it.
This is for LR Japanese to English
I am watching on Netflix France
I did report the bug that way but didnât get an answer just yet. I thought I would maximize my chances by posting here too in case the devs are more active on the forum.