This ticket clones MC-277533, whose fix was reverted in the 1.21.4 Pre-Release 1. Bundles can remain in the open state when taken out from saved hotbars.
How to reproduce
/give @s bundle[bundle_contents=[{id:"minecraft:kelp",count:1},{id:"minecraft:crafter",count:1}]] 1
Save your hotbar
Open saved hotbars tab
Hover over the bundle and use your mouse wheel to scroll through and select an item
Take the open bundle with the right or left mouse button
Expected result
The bundle will no longer remain open once it is on your cursor.
Observed result
The bundle on your cursor stays open.
Attachments
Comments 4
Thank you for your report!
After consideration, the issue is being closed as Won't Fix.
Please note that this is not the same as Working as Intended, as this bug report correctly describes behavior in the game that might not be the intended or desirable behavior, but it will not be fixed right now. Sometimes, this is because the issue reported is minor and/or impossible to change without large architectural changes to the code base.
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Can confirm.