The panzerschreck upgrade for the stormtroopers grants access to vehicle detection ability. However it's hotkey is conflicting with smoke grenades and also gains priority. This means that when you quickly try to smoke, you end up wasting your munition on vehicle detection instead. In tight situations this can be a serious issue.
![](https://i.imgur.com/udldkaZ.png)
I have checked all abilities and upgrades for the storms (stun nades and sprint) and the X key is free to be taken.
![](https://i.imgur.com/lJyW87x.png)
(cheat mod)
Additionally, in the commander revamp preview, it was mentioned that their schreck upgrade would be lowered to 60 munitions from 75, yet it's still 75.
https://community.companyofheroes.com/discussion/245307/commander-revamp-preview-changelog