I can confirm the error:
#_fabrik_form_session truncated
Form set to "save partly"=no
Menu item with fabrik list
edit a record
submit the form with a validation error
-->
go back to the list and edit again (any record): all is ok
#_fabrik_form_session truncated
Form set to "save partly"=no
Menu item with fabrik list
edit a record
submit the form with a validation error
-->
- you can see a new entry in #_fabrik_form_session
- (do anything else)
- return to your list and edit any record (not necessarily the one where you got the validation error)-->
- the elements are empty and it's showing the validation error messages (above the form and the element's one)
go back to the list and edit again (any record): all is ok