Azure Web App for Linux (Container) HTTP logs stop being provided

Question

I've got an Azure Web App for Linux (Container) running and I have setup Diagnostic Settings so that AppServiceHTTPLogs are exposed and I also set Application logging under App Service Logs to Filesystem. I can view and query them in the Logs under the Monitoring section of the Web App settings.

This works fine for a few days but then it just stops logging. At first I thought it was a space issue, so I changed the quota from 35mb to 100mb, and it started logging again. Then a day later it stopped logging again, so I changed the retention from 7 days to 1 day. It started logging again. Now it has stopped and I can't go higher than 100mb or lower than 1 day. Additionally, when I look at the Filesystem storage used it's only sitting at a few megabytes.

I have no idea why it just stops logging. Has anyone experienced this?

EDIT: As a wild experiment I just set the retention days back to 7, and low and behold it started logging again. It's as if it's just seeking attention.