I just found there is a bug in Subtitles.
New (blank) lines are created when the project is saved.
Here is a GIF to show that 👍
I first import and save the project and then open and save it a couple fo time... it adds new lines everytime.
Not saving doesn't adds lines.
I think I found where is the problem, I will try to correct it.
Ok, it is a bit more complicated than I thought.
I located the file (SnM_Notes.cpp) and the function (SaveExtensionConfig), but deleting the "/n" broke the subtitles.
Any help is welcome, it seems out of my knowledge :)
Thanks for the report, this should be fixed for the next pre-release (which will be v2.5.3)
Thanks to you :) ! Cheers !