Affects Version/s: Minecraft 18w06a, Minecraft 18w20c, Minecraft 1.13.1
Fix Version/s: None
Scoreboard objective criteria tab-completion does not account for namespaces being optional. Leaving out one or two of the namespaces gives a live error message ("Unknown criteria name") until the argument is completed manually. To reproduce, first type in
and then type out any of the following examples for the criteria argument:
Observe the tab-suggestions disappear and a live error message appear instead. Note that all of the examples given are valid and working criteria.