[Rare] [Minor] Logging in and being placed in a sort "vanish" mode

[Snowboardpvp]

Mod In Question

General, possibly Sponge or Forge.

Link to crash log

No crash log.

Expected behavior

When I log in, I will stay logged in, my name will appear on the tab list, and other players will be able to see me.

Actual Behavior

When I logged on, it displayed the logging in message, but then immediately displayed the logging out one. I was still on the server, able to interact with entities, build, etc. but my name did not appear on the tab list and to others players(spazapple) I was invisible.

Steps to reproduce

I was not able to reproduce the issue after relogging a few times. Simply log in though, and it may happen. I will add to this report if it occurs again.

Suggestion on how to fix or supply fix

Not really, as I was not able to reproduce the issue, and the problem is rather general. It is most likely a problem with Sponge or Forge as they handle logging and players, or EssentialCmds as it does remind me of "/vanish".