When a player dies and picks up his XP, he gets more, than he had before.
This caused, that the players on my server started jumping off high pillars to level up.

I found out in 2.0.4 with a customized config.
The same day, 2.0.5 came out ... there i tried it with the default config and this still happens.

Thanks for the report, fixed with 6234db0

Bug still exist in 2.0.6 ...