I noticed a silly case where when emojiful 5.1.5 is installed (as a part of the Direwolf20 1.21.1 modpack (version 1.2.1)), an autodiscovered server with IPv6 has an emoji shown in it's address, as seen on the screenshot below.

With emojiful

Without emojiful

If this is intentional, i would like to report that the icon seems missaligned