Tabbing to complete emoji, @, and # entries.

Recently when I type the first parts of a emoji's name, a person's name, or a channel's name, and press tab the wrong items are selected every time.

For example, typing ":slee" and pressing tab gives me the :sleeping: emoji instead of the custom :sleep: emoji.  Or ":pain" and pressing tab gives me the :paintbrush: emoji instead of the custom :pain: emoji.

It's not just emojis, but peoples's names as well.  Typing in the first characters of a person's name and pressing tab will auto complete to someone with a completely unrelated name.

Has something to do with this changed recently?  It's extremely frustrating to be constantly entering the wrong emojis and channel names but even worse to accidentally ping the wrong person.