DB field "list_type" breaks rendering of DCE fields in backend
I recogniized, that the DCE fields of a DCE plugin are not shown, when the DB field "list_type" of the tt_content record is not empty.
This could happen, if you have an "Insert Plugin" content element where you have choosen any plugin (formhandler_pi1, tt_address_pi1, ..)
and after that, you change this content element to be a DCE. Then the DB field "list_type" ist still filled with something.
I don't know, why that happen. I use a TYPO3 6.2.26