Lighting issue affecting caves, mob spawners, and other dark areas

I have found a bug affecting lighting in dark areas above and below ground where sun/moon lighting is being found inside the caves/dark rooms and the mobs are being affected as well (zombies/skeletons burning, etc.) so mob farms aren't working at all because despite being in a fully closed off room they are either burning or not spawning

It should also be noted I'm playing on a Spigot 1.14 server

I have taken this issue to twitter before here but to no avail (@mojangsupport was tagged in the posts)

Twitter post 1

Twitter post 2

Twitter post 3

And i have made a screen recording of the issue as well