dropdown doesn't show me some users
seems to only allow me to pick users that are in the first page of the right column

it's actually a search field! it just shows the first 20 users as the initial results for the empty string.
this does still feel like a not-great way to select groups, but i don't know what the right thing is. whether or not it makes sense to load the entire user directory into a dropdown depends on how many users there will be - it'd be great for <~500 and probably visibly slow/stuttery for >~1k. we could maybe make our own lazy-loading paginate-on-scroll component but that felt complicated
is there a way to add a "type to search..." text label at the bottom of the search dropdown, ideally in lighter text color?
i think active users on here will split into 1) casual people stopping by to play with the system, and 2) repeat users who use this to interact with a group they know. the random button should support the casual users while repeat users might have to deal with their thread getting pushed down the page but that might not be super urgent to fix.