Same issue. I have an animation created in Blender and ported through to UE 5.2. In the character Blueprint the animation loops no issue. I can even put the blueprint in the world and it will loop. As soon as I put it into an animgraph state machine it does one l cycle and then freezes. Stop and go back to idle, then go again, and I get another cycle and freeze. There must be a setting somewhere?
Whoops:
There is a Loop checkbox in the Settings section of the animation’s Details panel that seems to get unchecked by default when the animation gets added to the Animgraph’s Output Animation Pose. It is under the PlayRateScaleBiasClamp dropdown.