Bug: custom tabs disabled but they still get used if I open cross-posted links

Browsing this post in the app shows me links to hacker news, those still open in Firefox custom tabs thing despite that they are disabled in the jerboa settings.

Normal links open in my default browser as they should.

Edit: it happens to the hacker news links in this post as well!

Ps: unrelated feedback: the + button you use to submit posts should be something different. Like it should say submit.