SUMMARY

Notifications from Chrome and Firefox are not shown in the notification history of the applet, even if all settings are enabled. Is there some hard-coded blacklist? I looked at the sources and have no clue what is wrong.

I caputured the method call with dbus-monitor. See below..


STEPS TO REPRODUCE
1. In the settings enable "Show in history" generally and per application.
In ~/.config/plasmanotifyrc confirm that ShowInHistory=false is *not* set for e.g. [Applications][google-chrome]. Check that other notifications arrive in the history, as configured.
2. Receive a notification from google-chrome running MS-teams or Mattermost, or probably others.


OBSERVED RESULT
The popup appears, but no entry is in the history, after it the popup disappears.

EXPECTED RESULT
The notification is in the history in the applet.


SOFTWARE/OS VERSIONS
Fedora 34
Plasma 5.21.4

ADDITIONAL INFORMATION

I caputured the dbus method call with dbus-monitor:
method call time=1620286131.648975 sender=:1.207 -> destination=org.freedesktop.Notifications serial=35 path=/org/freedesktop/Notifications; interface=org.freedesktop.Notifications; member=Notify
   string "Google Chrome"
   uint32 0
   string "file:///tmp/.com.google.Chrome.OqAeVR"
   string "Allgemein"
   string "M hat auf eine Unterhaltung in Allgemein geantwortet, an der Sie teilnehmen"
   array [
      string "default"
      string "Activate"
      string "settings"
      string "Settings"
   ]
   array [
      dict entry(
         string "urgency"
         variant             uint32 1
      )
      dict entry(
         string "desktop-entry"
         variant             string "google-chrome"
      )
      dict entry(
         string "image_path"
         variant             string "/tmp/.com.google.Chrome.4Y0me0"
      )
      dict entry(
         string "image-path"
         variant             string "/tmp/.com.google.Chrome.4Y0me0"
      )
      dict entry(
         string "x-kde-origin-name"
         variant             string "teams.microsoft.com"
      )
   ]
   int32 25000

I then tried to reproduce such a call with busctl to figure out what the criteria for the history list are. From dbus point of view it looks virtually the same, but the following notification shows up in history, and the former does not!

method call time=1620286512.261841 sender=:1.423 -> destination=org.freedesktop.Notifications serial=2 path=/org/freedesktop/Notifications; interface=org.freedesktop.Notifications; member=Notify
   string "Google Chrome"
   uint32 0
   string "file:///tmp/.com.google.Chrome.OqAeVR"
   string "Header"
   string "Do 06 Mai 2021 09:35:12 CEST"
   array [
      string "default"
      string "Activate"
      string "settings"
      string "Settings"
   ]
   array [
      dict entry(
         string "urgency"
         variant             uint32 1
      )
      dict entry(
         string "desktop-entry"
         variant             string "google-chrome"
      )
      dict entry(
         string "x-kde-origin-name"
         variant             string "teams.microsoft.com"
      )
      dict entry(
         string "image_path"
         variant             string "/tmp/.com.google.Chrome.1keGGA"
      )
      dict entry(
         string "image-path"
         variant             string "/tmp/.com.google.Chrome.1keGGA"
      )
   ]
   int32 25000

This produced by:

busctl --user call org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications Notify susssasa\{sv\}i  "Google Chrome"  0  "file:///tmp/.com.google.Chrome.OqAeVR"  "Header"  "$(date)"  4 "default" "Activate" "settings" "Settings" 5 urgency u 1 desktop-entry s google-chrome x-kde-origin-name s teams.microsoft.com image_path s /tmp/.com.google.Chrome.1keGGA image-path s /tmp/.com.google.Chrome.1keGGA 25000

Tell me if I can help!
Thanks,
Florian