MINI ISSUE: GScatter — Unsupported ejected group feature
FIXED (Temporary): by disable the Eject feature when GScatter exists within any subgroup.

MINI ISSUE : UVPackmaster3 Compatibility (Only Panel in 3DView)

Heads-up: UVPackmaster3 Compatibility in 1.1.0
You can "Group" UVPackmaster3 panels into SUPERTABs normally.
However, due to the special way UVPM3 panels are written (they don't specify their N-Panel location directly), "Removing" them causes issues:
- "Eject" Feature: This will not work. The panel will disappear (but you can "Cancel Eject" to bring it back into SUPERTABs).
- "Remove" Feature: The panel will not immediately return to the Sidebar.
Permanent Fix (For "Remove" Only):
- In SUPERTABs settings, "Remove" UVPM3 from its group.
- (Important!) If you use "Auto Import":
- Go to "Manual Import/Export."
- Click "Export" to overwrite your settings file immediately (this saves the change and stops Blender from reloading the old group).
- Restart Blender (The UVPM3 panel will return to the Sidebar).