This is more prevalent if you do a full data export on multiple months, and have "Group Entries by Month" enabled, since in this situation PDF pages are generated on a per-month basis, instead of a per-day basis.
The number of images which causes this to malfunction is not clear, as it generally depends on the device's available memory.
Workaround: Consider disabling "Group Entries by Month" if you only see this issue in a full data export grouped by months.
This is more prevalent if you do a full data export on multiple months, and have "Group Entries by Month" enabled, since in this situation PDF pages are generated on a per-month basis, instead of a per-day basis.
The number of images which causes this to malfunction is not clear, as it generally depends on the device's available memory.
Workaround: Consider disabling "Group Entries by Month" if you only see this issue in a full data export grouped by months.