[0.16.7.0] Drag-Copy large group objects does not save

Drag-copying objects as a group does not save when closing and re-opening condos.
Edit: Just placing and interacting/editing with certain objects now doesn’t save,
this makes it impossible for me to build

Condo snapshot & autosaves does not save it either. Placing other objects before and after copying still reverts condo to before it was copied. And thus, all objects are deleted.

Steps to Reproduce

(Tower Bug - YouTube)

What I expected to happen

All objects to be present.


Notes / Media

This never happened prior to the previous update.