Hi,
I posted about this a while ago: https://forum.videolan.org/viewtopic.php?f=12&t=136799
I'm on Mac OS X 10.11.6 using VLC Version 2.2.4 Weatherwax (Intel 64bit) on an old MacPro (early 2008) desktop.
4-5 months ago, no problems at all formatting subtitles. I could change size, font, color, background (and its opacity) and everything else. Now, there's no way at all. All I get is white text, normal size, no background. Meaning that the text blends into the videos and makes it - disappear.
I wouldn't whine about this unless I really, really need subtitling.
Please, please, please fix this!
Cheers,
Dan
(who actually has been contributing to the VLC project for four years)