Quick answer: Unreal Anim BP showing a one-frame T-pose on state transitions using pose assets? Pose asset evaluation isn't tickless - use a 0.001s blend or pre-initialize the pose.

Animation Blueprint switches from idle to alert. One frame: T-pose. Next frame: alert pose.

Add a minimal blend

Transition blend duration = 0.001s. Pose asset interpolation runs; the T-pose frame disappears.

Pre-cache the pose

In Anim BP construction, call Init Anim on the pose asset. First evaluation has a valid pose; the skip vanishes.

Verify with Anim Graph debugger

Enable Show Anim Graph Debug Overlay. Pose asset evaluation shows per-frame; skipped frames are visible.

“Pose asset evaluation is lazy. Forced initialization makes it eager.”

If you find yourself adding 0.001s blends everywhere, your animation pipeline is fighting Unreal's lazy evaluation. Refactor to pre-cached poses systematically.