Actionable notification URI don't work when connected from remote

Good evening,
I’m relatively new in Home Assistant, but experienced in computers and networks,
I have a Raspberry Pi 5 with Home Assistant OS, with remote access done by port 443, with SSL (Let’s Encrypt) and DynuDNS for dynamic DNS (not static IP from my fiber provider).
Yesterday I configured and tried actionable notification, and it works right when I’m in the same network of the Raspberry.
But when I leave home, I tap in the Open URL notification, and it brings me to the last used dashboard, instead of the dashboard relative address that I configured in the actionable notification.
It only happens if I close the app.
If the app remains open in the background, when I tap the action, it brings me to the right dashboard.
It’s a known problem? Or maybe I’m doing something wrong?

Nobody has the same problem?