In some circumstances, the "My appointments" and "All appointments" view are displayed as empty even if some slots are present. This happens if
- all slots in the Scheduler are in the past, and
- the total number of slots is divisible by 25.
The slots will still be visible in the "Export", "Statistics" and "Overview" tabs.
The bug appears to occur on current master, Scheduler 3.1.x, 2.9.x and likely all previous versions.