I can only replicate it inconsistently, but it's usually the first two slots, default keybinds 1 and 2 that don't restore. Once it was that entire bar, another time just one slot. It feels almost completely random.
Actually, my complaint was less about completing the alert and more about getting one alert with 5 support so it takes forever, then switching to tank to avoid getting that group again and instead being teamed with 3 tanks and having to fight over threat. Why not put one of those tanks in with those all support groups? I…