Hello there,
The inventor disappears when I move the part I opened in the assembly work environment.
What version of Inventor?
If you're on 2019, make sure you have all of the updates installed ...
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Mike Davis
Hi! Without seeing the files, it is hard to tell the exact problem. But, based on the images you share, I believe the issue has been fixed on 2019.3. Please install 2019.3 and open the assembly -> Manage -> Rebuild All. The defect was known as INVGEN-22035. It should work fine afterwards.
Many thanks!
Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer