In Bedrock Edition, it is possible to add spaces in the nickname. However, Luckperm commands don't support nicknames have space so I can't use Luckperm commands like /lp user player 123 permission info. So can you support it like using quotes. For example, /lp user "player 123" permission info. I think it would be useful than writing UUID or change config(allow-invalid-usernames) instead.

Also, allow-invalid-usernames: true doesn't work that nicknames have space.

Quotes are already supported.