What I did: clicking on agenda://reminder/[looong_ID] URL link in Reminder
What happened: Agenda app opens (or gets focus if it’s already running) but the note that the link refers to doesn’t open - it just shows what was originally opened in the Agenda window, no change of the view. However, in about 10 % of cases the desired note opens. But mostly not.
What I expected: Agenda should show the note that the link refers to. It happens in some 10 % of cases.
Things that might be helpful to know (Agenda version, OS and model, etc): Agenda 10.0.4, macOS 10.15.6, Reminder 7.0.