Attempting to render adornments in a WorldModel under a ViewportFrame crashes Roblox

[metatablecatmaid (metatablecat)]

If you attempt to render an adornment in a WorldModel placed under a ViewportFrame, the client will crash

A simple reproduction is to create the instance tree above, then attempt to set the adornment of the Handles to the part.

Expected behavior

The Handles to correctly snap to the viewport frame (and maybe even work?, because it would be nice to edit stuff inside a DockWidget through a ViewportFrame) without crashing

[hyperhumanist]

I am unable to reproduce this. Please see the screenshot below, which doesn’t give me any crash:

If this is still an issue for you, please upload the specific .rblx file just before you assign the adornee, so we can be 100% sure we are testing the same thing you are.

Thanks!