The Bug:
A bundle in a bundle occupies 4 slots at once, a bucket of salmon, or saddle occupies all 64 free slots.
P.S. These items are just examples of the bug.
How to reproduce:
Press "Create New World" on version 1.19.3, select Creative mode, press "Datapacks" and select "bundle".
Once you are in the world, search for 2 bundles, one bucket of salmon and one saddle.
First, try to put one bundle into another. Then take the bundle out. And then do these actions again with the bucket of salmon and saddle.
Thank you for your report!
However, this issue is Working as Intended.
As stated in the 20w45a snapshot article:
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
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