I wasn't able to get back to you guys right away so you closed this bug with no effort to fix. I apologize.
I'm not sure why the gizmo disappears when the grab or move or scale function is enabled.So what you are saying is that it is suppose to disappear when you grab or scale or rotate in edit mode? That's weird. The issue is easily fixed by hitting the escape key, then the gizmo comes back.
See the images to see what I'm talking about.
This has been on all variants of the Blender 2.8 version
I'm using Ubuntu 19.04 64bit
Intel Core i7-6500U CPU @ 2.50GHz × 4
Intel® HD Graphics 520 (Skylake GT2)


