Hiding/Showing group changes visibility of *everything* inside the group
Clicking the "eyeball" to show or hide a group changes the "eyeball" setting of everything inside the group to match the group setting.
This must be a bug. It can't *possibly* be how you expected people to work.
I carefully set the visibility of a dozen inner components within a group to match their "hidden" status and to make the edit screen usable, and a single click on an parent group undoes all my work.
This is a bad user experience that makes me say unkind things about Justinmind.