I’m giving a try to the version 0.9-3145-g40a8789 (one day after yours, i think).
Didn’t find (yet) anything wierd like you; Well, nothing come to my mind for your first case, mainly because of the lack of information (fighting ? crafting ? just running ? waiting ? any monster in view ? Any debuff or seeing the eyes/ spore etc ?)
For the second part, you were fighting what ? If there is at last one Z shocker, they MAy (very unlikely) stunlockyou, especialy with very low coverage from your clothe & reduce speed (well, just a long action, like swing a wheel or anything you shouldn’t try, can lead to over 4000 movement point, so ±30/40 turns for usual enemies). you may also have debuff before anyway, I think we need to be sure.