The new beta Lua move tools apply changes to the last previously moved instances when moving an attachment. This bug can be reproduced by using the new beta Lua draggers, dragging an instance, and then selecting and moving/rotating an attachment.
Here is a video of the bug:
Beta features will become normal features, so treat them like normal features. Always create standalone bug report topics for them so issues don’t get lost in one giant thread, just specify that you are using a beta feature built into Studio. Afterwards, you’re welcome to reply to the announcement with a link to your bug report thread.
Thanks for the report! We’ve filed a ticket to our internal database and we’ll follow up here when we have an update for you.
This issue should now be resolved! If this issue is still occurring, please create a new topic for us to look into.