I created my own CE in TYPO3 6 and I do get the options "Language", "Columns", "Before", ... , and "Index" in my General Tab when I open the CE in the Backend.
But now I updated to TYPO3 7.6 and I do NOT get the listed options. Only when I use the extension "compatibility6" I do see them.
Here is my TCA configuration:
// Backend configuration
$TCA['tt_content']['types'][$pluginSignature]['showitem'] = '
CType;;4;button;1-1-1, header;' . $locallangXml . ':header,
--div--;' . $locallangXml . ':tabs.plugin,pi_flexform;' . $locallangXml . ':header.plugin,
--div--;' . $locallangXml . ':tabs.plugin,pi_flexform_CType;;;;1-1-1,
--div--;LLL:EXT:cms/locallang_tca.xml:pages.tabs.access, starttime, endtime, fe_group, colPos, l18n_parent,l18n_diffsource, backupColPos,
tx_gridelements_backend_layout,tx_gridelements_children,tx_gridelements_container,tx_gridelements_columns';
Finally some screens to show you my problem.
Typo3 7.6 with installed extension "compatibility6"
Typo3 7.6 without the extension. Important features are missing! How do I get them back?