I was in the empowered Fall of the Empire timeline and doing the quest where you destroy the 3 Soul Repositories. I destroyed 2 of the Repositories but my Abomination kept getting stuck in place when trying the attack the final one. It was doing the running animation but did not move at all. It could attack the other mobs just fine but would get stuck whenever it tried to attack the Repository, the result was the same whether I let the Abomination attack automatically or if I ordered it directly.
Video is in the link: https://drive.google.com/file/d/1CaiLe0VGADx-wvwyOVragjgeozZ5cgBw/view