Notifications not working properly for certain apps (Galaxy S9)

[Jonathan Greenberg]

Ever since the latest update the notifications have not been working correctly on my phone. I've ruled out all possible factors I can think of and that are suggested from my google searches, but I haven't seen this specific problem.

These apps give me push notifications when I open the apps, but not otherwise.

I've tried resetting their notification settings as well and it has not made a difference.