Clients crash in Test Server when specific GUI replicates

When in Studio Test Server, if the server replicates the specific GUI below to its clients (for example, by inserting it into workspace), it disconnects all clients.

disconnect.rbxmx (5.1 KB)

This bug has happened every time I’ve tried it, even on an empty baseplate. I’ve tried it on my Windows 10 PC and my Macbook Pro. I’ve also asked a friend to try it on his PC. I believe it’s due to the SizeFromContents property of GuiObject because when I uncheck it, it works fine.

Clip of dragging file in and subsequent client disconnection:
2017-12-07_22-46-54

Specific GUI element that is problematic:

That’s… strange. I’ll add this one to the bug list.

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