I have had this error since A24. When putting multiple Barracks in one control Group, one or more often stop working.
Happens in booming and when rebuilding larger Batches of Population.
Say I'd have 10 Barracks and want to produce 30 Soldiers. Often it ends up with 6 Barracks doing Batches of 5, instead of all 10 doing 3.
Same with Blacksmiths, If i have 3 in one control group. If i then just select the symbols, they often get queued all on one Blacksmith, instead of spreading it evenly.
Probably this is a known bug, but didn't find it. WIl it be fixed or do I have to always double check if everything works and manually use it?
Maybe it would also be nice that the hotkey that shows the health of a unit or building would also show if that building is Idle or in use.