BUG REPORT:

With Tweetbot 3.3.3 and Choosy 2.1 under macOS 10.15.6, if I view a tweet from the @consequence account that contains a link and I try to click on that link, the Choosy browser chooser appears, but the link bar underneath is empty, and clicking on a browser doesn't work. (Nothing happens.)

So far I am only able to reproduce it with links from that particular Twitter account, which are shortened with a custom scheme using the form

http://cos.lv/xxxxx

Something in this doesn't agree with Choosy's default behaviour.

HOWEVER, if, instead of simply clicking on the link, I right-click on the link and select "Open in Choosy", then the browser chooser that appears does work as expected.

I am able to either use the Open in Choosy workaround or to create a custom rule for Tweetbot that doesn't open the chooser at all and automatically goes to my default browser (which works for me most of the time), but it's not ideal.

Intriguingly, if I try to add another condition to the rule to limit it to web addresses in Tweetbot containing "cos" or ".lv", it doesn't work. So the rule can only work for ALL links in Tweetbot, not just links from that particular Twitter account.

This started for me after I upgraded to Catalina (even before 10.15.6). So I suspect that users with previous versions of macOS won't be able to reproduce. But presumably Catalina users will.

I am trying to identify other Twitter accounts whose links suffer the same fate when trying to use Choosy in Tweetbot. I'll post a comment if I find some.