Some Top Blocked Domains Not Showing in Logs

Expected Behaviour:

Click on top blocked domain [cws.conviva.com] on the Dashboard to go to Recent Queries (showing queries for domain cws.conviva.com). Select All from dropdown. List of blocked queries should be displayed (to help isolate client/source).

Pi-hole v.5.0 on Pi 4, Raspian, Cloudflared, no other Pi apps, privacy level set to "Show everything and record everything". Logs manually flushed about 28 hours ago.

Actual Behaviour:

Blank log is displayed. Clicking on Query Log (all) and using filter box or CTRL-F does not show a single entry for cws.conviva.com or other "top blocked domains", but other blocked domains are listed.

Debug Token:

https://tricorder.pi-hole.net/k2ws99vnk9

Rebooting the server resolved the issue.