Steps to reproduce:

1. Run execute as @e[type=item] run data merge entity @s {Age:1} on repeating.
2. Use /give @p stone 1.

Results:

Expected: Gain the item. That's it.

Observed: Gain the item, but an extra unpickable item spawned. It moved in the same way as pressing Q.

Commands used:

/give @p stone 1

execute as @e[type=item] run data merge entity @s {Age:1}

/data get entity @e[type=item,limit=1]

/summon item ~ ~ ~ {Item:{id:"minecraft:stone",Count:1}}

execute as @e[type=item] run data merge entity @s {Age:-1}

execute as @e[type=item] run data merge entity @s {Fire:2s}

execute as @e[type=item] run data modify entity @s Age set value 1

Other things tried:

• Set to Age:-1 instead of Age:1. Result: Bug
• Use /summon instead of /give. Result: No bug
• Try other tags (such as Fire, Air and Health). Result: No bug
• Use /data modify instead of /data merge. Result: Bug
• Run /give with a command block. Result: No bug
• Use /data get to check the data. Result: PickupDelay is stuck at 32767s, even if I didn't touch that tag.