ValveSoftware/Dota-2#2737
https://www.youtube.com/watch?v=GJo5N9VC7bQ
When using RMMAI bot scripts, lines like this are constantly spammed on the in-game Console:
[Developer] 'IsInvulnerable' called on an entity (npc_dota_badguys_fort at 5528 5000 248) that cannot be seen!
Launching with +sv_cheats 1 or doing a custom lobby with cheats don't stop the spam.