I get continuous notification loop

[C-Duv]

Sometimes I get notifications loop: 3 notification popups are shown (seems the maximum on my browser) and the moment one popup times out, another pops.
Same thing if I close one: another popups.

They are all notifications for the same stuff (planned tasks).

Server' access logs are filled with request for:

GET /plugins/browsernotification/ajax/check.php?new_ticket=1355&assigned_ticket=691&assigned_group_ticket=9&ticket_followup=2391&ticket_validation=1&ticket_status=10477598&ticket_task=264&ticket_document=1393&ticket_scheduled_task=1504515600

[enannos]

I have the same issue. It seems like on edge, the notifications enter in a loop.

GLPI: 9.4.6