I was playing competitive as zen in anubis. When we were attacking point B I suddenly can’t use my primary and alternate fire. And no my mice isn’t broken since when I press escape I still can left click the options. In the end I had to swap to another hero and swap back to zen to “fix” it which resets my ult charge.
I just experienced the same bug.
Halve way trough the defence both my primary and secondary fire on zen stopped working and all i could do was applying discord and healing orb.
I tried minimizing the game and back but that didn’t help.
Only after the round was over my primary and secondary fire stared working again.