Missing items when using "Full Content --> HTML"

STEP 1: Filter against a user in JIRA
STEP 2: 17 issues are displayed
STEP 3: you decide to generate a more detailed view of the 17 issues via "Full Content --> HTML"
STEP 4: you get the more detailed view BUT instead of 17 issues you only see 13 issues. For some unknown reason, 4 issues have gone missing!!!!