Animated NPCs from "Animated Morrowind" briefly reset to idle animation during their animation loop.
Using the latest Dev Build (0.49) available on the website; and BCOM's animated morrowind version. The issue doesn't happen in 0.48.
openmw.exe_2024.05.10_-_16.44.54.01
As a side note, in 0.48 the drunk walking npc was walking on the same spot, meanwhile in 0.49 he moves around properly during the drunk animation. Still in both versions he defaults to base walking animation for some few seconds (I don't know if its intended behavior)