Unselectable/editable Grouped objects bug.

Within the first few minutes i have been in forge i have discovered that when I switch the parent object of a group of objects that it fails to switch the object and if i keep trying to change it it will kick me out of the menu and the object stays but is no longer editable. Now i have recreated this twice. In one test the object few away almost instantly as it tried to rotate to some angle. The only way to get rid of the objects are to lock everything else up and us the delete all objects. The objects i used were 3 wall pieces (default) and a glass piece (neon Green),

Pieces used initially and in testing afterward.

Wall 2x4x24 (2)
Wall 2x16x24 (1)
Glass 2x8x32 (1)

Upon further testing the object doesnt matter. It seems that there is an extra object in the parent list that doesn’t exist. IE. All objects turn green none are blue. It is noticeable when it ticks over the last object and returns to 1 or ticks below 1 and returns to the highest value,

A fix for this would be great.

Update!

Object 1 is the culprit. For whatever reason this becomes unselectable if you change the parent object.