Error when profiling dimension gets unloaded

[v1993]

This appears in server logs when Mystcraft profiling is finished:

[18:59:48] [Server thread/INFO] [Mystcraft]: Baseline Profiling for Instability completed.
[18:59:48] [Server thread/INFO] [Mystcraft]: Baseline Profiling cleaning up.
[18:59:56] [Server thread/ERROR] [Mystcraft]: World with matching dim id to profiling dim unloaded!
[18:59:56] [Server thread/INFO] [FML]: Unloading dimension -2147483648

Mystcraft seems to complain about dimension being unloaded right after it itself requests to unload said dimension, which doesn't seem right at all.