Every now and then, an app will suddenly refuse to connect to its online services, with no notification from GlassWire (Ask To Connect). When opening GlassWire, and looking in the firewall section, the app is blocked internet access. I have to manually allow it in the GlassWire interface.
Why doesn’t the Ask To Connect notification always appear ?
It even happens repeatedly for the same apps. I suspect it happens when an app updates to a new version. I’ve seen it happen with for instance Skype and Slack.