[TYPO3-english] TCA of my extended frontend user only displayed if cache cleared in 6.x

[Domi]

Hello,

I got another issue after upgrading 4.7 to 6.x (tried in both, current 
6.1 dev and 6.0.2):

I extended the table fe_users with own tables and after cache cleared I 
get inside of my controller all TCA columns of the extended table. But 
after reloading the page the TCA only remains with the build in columns.

This happens even if my action is uncached, links set to this action are 
set to uncached and does not send cHash. In 4.7 this behaviour was 
different, I could access the TCA columns of my extension after 
reloading the page.

Is there any kind of hidden configuration necessery for getting this to 
work?

Regards,
Dominic