The bug
Using Tab multiple times to select a datapack / resource pack from the list does not deselect it.
How to reproduce
Press the Tab
key several times while in the Datapacks and/or Resource Packs menu.
Examples
[media]
[media]
Using Tab multiple times to select a datapack / resource pack from the list does not deselect it.
Press the Tab
key several times while in the Datapacks and/or Resource Packs menu.
Can confirm in 21w05b.