Just to report a loot bug on E&P 20.1. I Had no loot from defeated Titan.
I fight with my clan the harpy titan 5 star and once defeated everyone receive the loot except me. I waited until the new titan appearance but still no loot window. I check my inventory and no object was added.
My grade was A+ because I was first in the board and I finished my last attack just in the same time than my clanmate who kill the titan.
Hope than It can help you to resolve the bug.
Sorry for my poor english language.