content of (one) form missing in exported files

[peerlight]

WEB > powermail shows "mails" for two forms on a page

without filtering for form1 or form2

• table shows mails of form1 and form2
• CSV-File misses rows of form2 completely
• XLS-File has empty rows where content of form2 should be

with filtering everything is ok

the forms are configured in a way that there are no mails sent to recepient nor sender

powermail 7.4.0 on TYPO3 9.5.14