Hi, I can’t figure out which exact scenarios cause it, but it just seems to happen at random. When I finish shooting a handheld weapon and move, instead of returning to a jog/run movement, it stays in the slow walking/aiming/shooting stance. Been referred by the Waypoint Twitter to post here.
Thanks.
Thanks for the heads-up, TyzerGsy. When this happens in the future, can you tell us the action you were taking before it happened, along with the relevant mission, please?
Just wanted to provide a quick update! We’re working on a fix for this issue but in the meantime, flicking the right stick will get you out of the slow walking/aiming/shooting stance.
This bug happens to me 100% of the time on mission F-3 or F-2 (the one you begin by falling in a drop pod). The objective is to destroy two mega turrets. Upon exiting the northern-most turret, I’m always stuck walking.
Hope this helps
The fix for this issue is currently slated to release this week. Will confirm once it’s officially available in the wild. 
The Content Update for Halo: Spartan Assault on Xbox One is now live, which includes what we believe to be a fix for this issue. You can find the full change list for this update here. For those of you previously experiencing this issue, please let us know if things are resolved after you download the update. Thank you in advance.