Players spawn at the bottom of the Mining dimension when leaving the End

[BTOptimizer]

In Multiplayer, players will go to the End from the Mining dimension with no issue, but when they leave the End to go back to the Mining dimension, the Y coordinate they should be spawned at (around 250 Y) sends them to 0 - 3 Y in a wall leading them to suffocate if they cannot recover fast enough. This was tested in Singleplayer and works just fine. The current version of the mod we are using is StoneBlockDimensions-1.0.3

Server details are as follows:
Minecraft: 1.12.2 (Stoneblock 2)
SpongeAPI: 7.2-fe189dcf
Sponge: 1.12.2-7.2.0
SpongeForge: 1.12.2-2838-7.2.0
Minecraft Forge: 14.23.5.2838

Here are the coordinates from when I tried this in Multiplayer:


(I cleared the wall so I wouldn't be teleported back to the Overworld.)