Battle Command/Orders (from CTA, on a barb they seem to work normally) seem to fail to cast sometimes, your character performs the casting animation but there’s no sound or visual effect.
See these two videos for a visual demonstration, it happens in both D2R graphics and Legacy graphics.
It also happens to Raven, sometimes it’ll fail to summon a new raven (you can see whenever it’s successful a new raven spawns and the old one disappears, when it fails neither happens).
I think it could be potentially be related to this other bug somehow:
It seems this bug is active from the start of the game, I tried restarting D2R but the failed casts still occur after the restart.
It doesn’t matter if I’m holding down the hotkey or pressing the hotkey one at a time. It also doesn’t matter if I’m using a hotkey or setting it to right click, it still fails to cast.
It’s not affected by casting speed, I removed my Spirit and my speed decreased by 2 frames but it still occurred.
I tested this in the live version of D2R and had no such issue, so this seems to be a new bug with the PTR. This was also in single player so it can’t be an issue with ping or latency.