When you do this command:
/scoreboard players tag ... add/remove ...
Pressing TAB won't autofill the affected entities or existing tags even when you type a few starting letters.
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Comments 7
I just tried it and the player argument is auto-completed with tab in the /scoreboard players tag command
As it turns out, the auto-completed list of players relies on the scoreboard. If no players are tracked on the scoreboard, then the tab-complete doesn't have any players to pick from.
Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.
It's not easily possible to maintain a list of tags, because they can be (almost) anything and are attached to entities. Making this work could potentially cause performance issues.