When i am editing an article text field in focus mode, the autolink button doesn't open the autolink panel (at least, not visible)
Edit an article, select content or another tet field. Click Focus mode, then click autolink.
I'll take a look. The modal for Autolink is opening, it's just behind the focus mode screen, and only when the editor is open from another modal (like the article edit screen). This is because Focus Mode is, in itself, a full-screen modal. Browsers sometimes have difficulty determining which elements to show on top when you have a modal in a modal (or in this case, a modal inside a modal inside a third modal).
As a temporary workaround, you can simply close Focus Mode, run the autolinker, then re-open Focus Mode. Alternatively, you can switch to Old Edit for the article and Autolink should work perfectly fine in Focus Mode there. I'll investigate adding the Autolink modal to a different place in the code so that it can correctly show up above other modals.