So as I type this I am about to do a ICC 10m raid. I noticed that in the raid-frames i and assigned as a tank role in my DPS spec (Unholy Death Knight), as well as assigned a DPS spec in my tank spec (Blood Death Knight). The raid has noticed that we cannot change this.
I’ll second this. I can’t change my role from DPS to Healer. It auto puts me as DPS. But in 5-man groups, it puts me as a healer. So, its only in raids.