>Open a private tab to keep the notification open seem mitigate this issue a bit. Tabs rarely got closed. But the tab resume process is a bit slow.

プライベートタブなら通知が出るからリロードが多少軽減されるという指摘があるようだな

1752594 - [meta] Tabs reload too often in Firefox for Android
https://bugzilla.mozilla.org/show_bug.cgi?id=1752594#c33