Hello
I have just recently renewed my realm for 1.14 to play with my mates. So far so good found a nice double Skelly spawner and so we got to work on a spawner. Everything was fine until we started to expand around the outside of the spawner. There's a lighting glitch but instead of unnecessary darkness, it's the opposite with the skylight just moving through the ground itself to torch our skeletons. This glitch only seems to be effecting 1 chunk only and I have no idea why. 
Screenshots below show everything including myself going to the surface above where the spawner is and placing blocks to somehow prevent the sky light from hitting the skeletons but that didn't work. This is a server-sided glitch as everyone else can see this issue.
I am running some datapacks with the realm but none of them effect anything major like lighting. Those datapacks can be seen in a screenshot below as well.

If you wish to check this out or experiment with this chunk the seed is: 1385331659
And the chunk is: -32 0 -62 (more coords in the screenshots)