yeah ill probably have to make an issue on all of their repositories
its pretty much only supported by the main instance web frontends (lemmy-ui and pangora-ui) (been supported on lemmy-ui since before all of the apps were made)
currently recommended in programming.dev to cross post to as many communities as you can to give content to the lower activity communities and since there tends to be a lot of overlap with topics but thats conflicting with current app behaviours