The dropdown on forums.spongepowered.org doesn’t include the arrow, whereas the dropdown for everywhere else does.
http:https://forums-cdn.spongepowered.org/uploads/default/original/3X/0/c/0cf9129af989f300be384a710ac2681a947c7aa9.webm
(If the video doesn’t load, you’re probably using Safari. Webm isn’t supported by Safari)