Giant subtitles even if tiny or small subtitle size is set as default

I’ve been troubleshooting this problem for a bit last night.

The problem only appears untill the first time I play a file with a subtitle already selected before I push the play button. Any subsequent plays, even if I pick the subtitle after I push play will apply the correct sized font.

To summarize:

From a newly restartet plex server instance.

If I play a file, then pick a subtitle, it will result in a huge font. This will keep on happening for every time I pick a subtitle in a new file that I played before picking the subtitle.

However, If I pick a subtitle from the overview of the episode, then play the episode afterwards it result in a normal (small) sized subtitle.

After I have played any file with a subtitle already selected with the correct size, it will apply the correct subtitlesize upon selection afterwards, even if picked after I played the file.

It seems like there is some setting somewhere regarding subtitle font size, that do not get correctly applied untill after you play a file with a subtitle already selected with the correct font size.