Since updating to 11.0.4 about a week ago, I no longer receive texts unless I have recently† sent an outgoing text. Outgoing calls and use of mobile data aren’t enough: it has to be a text.
(I’m on Public Mobile, a Telus subsidiary. I use QKSMS as my interface app.)
†Within the last 24 hours? Yesterday my last outgoing text was 4:22 PM, and today I received a text sent at 3:58 PM but not one sent around 5:30.



But yeah, if you aren’t wanting to enable specific background apps, I’d definitely briefly enable it, turn on all, disable again.