Minecraft snapshot 24w12a introduces an item stack component for hiding the tooltip, aptly named minecraft:hide_tooltip. However, when this component is assigned to a renamed item stack that is placed into an item frame, the tooltip will still appear in-world when targeting the item frame.

Since the component name refers to tooltips (and not just slot tooltips), I would expect every instance of a tooltip appearing tied specifically to a certain item stack to follow that component. I believe that what item frames render for renamed items are in fact tooltips, so I believe this to be an oversight in the component's implementation.

Steps to reproduce

1. Obtain an item with the hide tooltip component: /give @s minecraft:diamond_block[minecraft:hide_tooltip=\{\},minecraft:custom_name='\{"text":"Test"\}']
2. Place this item into an item frame.
3. Observe that when facing the item frame, the the name 'Test' appears.

Note: a workaround does exist in /give @s minecraft:diamond_block[minecraft:custom_name='\{"text":""\}'], but this workaround affects the item name in other places as well, so it is not a true workaround.

Relates to MC-269678 as both issues are about places that the minecraft:hide_tooltip item stack component does not affect.