I did try that and same issue. It worked once and only once when I disabled all of my computer’s non-Microsoft processes so I think another app is blocking Minecraft somehow. Probably Unity.
The error continues to occur even after redownloading the Minecraft Launcher
Here’s a video, since I couldn’t seem to add it to the bug report itself
[media]
The copper golem can only put items into a chest if the chest is empty or already has the item.