I think it not Ubuntu bug but steam client bug, so i open ticket in steam support, mb thay make fix.
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1424263/comments/15 also work for me.
I think it not Ubuntu bug but steam client bug, so i open ticket in steam support, mb thay make fix.
https:/ /bugs.launchpad .net/ubuntu/ +source/ mesa/+bug/ 1424263/ comments/ 15
also work for me.