I also still have this issue with the default 18.04.1 version. However, i installed a newer mesa version (which also upgrades a bunch of other dependencies) using the padoka stable ppa and since then the issue is gone.
I also still have this issue with the default 18.04.1 version. However, i installed a newer mesa version (which also upgrades a bunch of other dependencies) using the padoka stable ppa and since then the issue is gone.