This has been happening to me a lot since the update. Especially wehre Ogres are concerned.
Far right lane of Dragonfall Bazaar, the Ogre will get stuck with Shield Goblins and doesn't correct his path when they've moved. Only defense that can kill them when stuck is the Obelisk.
And just now in Forgotten Ruins, mini-malthius blocked an Ogre in the centre spawn (video link attached). I could tell they were mini-malthius because my Obelisk did a bit of damage to Ogre which was suddenly healed.
We're closing this particular bug because we believe we've fixed the issue for this particular spawn point. We have not fixed the wider issue of all of the other spawn point issues. We are looking into a solution that could alleviate the issue globally, but for the time being, we ask players to please submit bug reports for individual spawn point issues.
Little Magic Hat, if you're still seeing stuck mobs for those particular spawn points, please submit those bug reports individually so that we can track them and update them individually. Thanks for your help!