Describe the bug
If you put items in a storage unit with the fast method (hold an item and right-click the block), some of the items in the unit may disappear if you restart the world.

Steps to Reproduce
Here are steps that show some logic on how this works. It looks like this bug happens in both creative and survival modes, with any non-creative storage unit and with any item, this is just how I tested this.

• Go to a singleplayer world and use creative mode.
• Place down a crude storage unit.
• Give yourself 63 turtle eggs and put them into the empty storage unit with the fast method (right-click the unit with the items in your main hand).
• Give yourself 64 turtle eggs and put them into the storage unit with the fast method.
• Give yourself another 64 turtle eggs and put them into the storage unit with the fast method.
• Quit the world and play it again.
• The last 64 turtle eggs put into the unit have disappeared now. It seems that if the storage unit contains 64 or more turtle eggs and you fast-put more in there, the newly put eggs disappear after reloading the world. This works differently with items that don't stack to 64, but has the same logic behind it.

Environment (please complete the following information with the version):

• Minecraft: 1.18
• Mod Loader: fabric-loader-0.12.11-1.18
• Mod: fabric-api-0.44.0+1.18
• Mod: modmenu-3.0.1
• Mod: TechReborn-5.1.0-beta.4

Able to replicate.

Thank you for detailed steps to reproduce. That helped a lot!