Beehaw's been holding back because they want to switch to Sublinks, and going past 0.18.4 would've made migration harder. But Sublinks has been slow to be ready and it's getting untenable to wait much longer, so they'll be upgrading to the latest Lemmy sometime. I'll be happy to finally switch to the actual app version of Voyager when they do, for now I've been self-hosting the last version of the web app that worked.
It's not that I don't want to, it's just that I'd like to see if instances breaks after updates or if new bugs are introduced because the QA of lemmy is abysmal