(This could technically be an issue with multiple subdomains or something but the case I have been seeing is with bridgy handles)
Bridgy handles in profile bios render as plain unclickable text when viewing via Witchsky but this is not the case when using the upstream social-app (bsky.app)
(my profile has both standard bsky handles and a bridgy handle linked if you need to see an example but I have observed this on other profiles as well)