You'll notice
Slash-command autocomplete now shows a '+N' count when multiple commands match
What
The autocomplete helper for finishing a partially-typed slash command now only suggests a completion when it's actually longer than what you typed. When more than one full command matches, the suggested text now appends a count of the extra matches, shown as <suffix> +N.
Why
This tells you at a glance that there are more matching commands than the one shown, instead of only ever seeing a single guess.