I tested a few more apps. Here's my summary:
Visit beehaw.org/c/gaming :
- Eternity: post shows up
- Sync: post shows up
- Voyager: post shows up
- Jerboa: post doesn't show up
- Boost: post shows up
- Connect: post shows up
Open post via beehaw.org/c/gaming :
- Eternity: app crashes completely
- Sync: displays post
- Voyager: displays post
- Jerboa: not applicable
- Boost: displays post initially, then either crashes to previous post or completely
- Connect: displays post
Open post via link:
- Eternity: crashes to previous post
- Sync: displays post
- Voyager: displays post
- Jerboa: opens post externally in browser
- Boost: displays post initially, then either crashes to previous post or completely
- Connect: displays "Error: unknown" and "1471762@infosec.pub unknown" (instance name infosec.pub changes when opened via a different instance)