Open notification dismissed still present (but without not text)

Hey there.
I'm facing a strange behaviour when dismissing an app notification in Chrome:
Join sends app 'Diretta' notifications on my pc (windows 10) and if click on 'Dismiss Everywhere' I still have that notification on my phone, but only the title, without notification text (please see pics attached).
I don't face this problem with any other app (notifications completely disappear if I click on Dismiss everywhere.
What's wrong?

Thanks!
Luigi.

 

I'm experiencing a similar problem, but for me it's only with the Twitch app. Have you figured out a solution, Luigi?

 

No..I've tried changing Category with AutoNotification but without any difference...
I can't understand why I have this problem only with this app...It has silent notifications, but also other apps that I can correctly dismiss...

 

Not sure it can be useful, but this is what I see in logcat when I dismiss that notification from Join on Chrome:

12-02 21:46:01.267 3821 3821 I port.Diretta_it: type=1400 audit(0.0:23393): avc: denied { open } for path="/proc/vmstat" dev="proc" ino=4026532365 scontext=u:r:untrusted_app:s0:c18,c256,c512,c768 tcontext=ubject_rroc_vmstat:s0 tclass=file permissive=1

12-02 21:46:01.267 3821 3821 I port.Diretta_it: type=1400 audit(0.0:23394): avc: denied { getattr } for path="/proc/vmstat" dev="proc" ino=4026532365 scontext=u:r:untrusted_app:s0:c18,c256,c512,c768 tcontext=ubject_rroc_vmstat:s0 tclass=file permissive=1

12-02 21:46:01.384 1811 1826 W android.os.Debug: failed to create memtrack_proc

12-02 21:45:06.208 1811 1827 I chatty : uid=1000(system) ActivityManager identical 2 lines

12-02 21:45:07.209 1811 1827 W ActivityManager: Scheduling restart of crashed service com.android.vending/com.google.android.finsky.billing.iab.InAppBillingService in 1000ms

12-02 21:46:01.538 1811 1827 E NotificationService: Suppressing notification from package by user request.