tx_fed_fcefile can be empty for new elements

[leonlaser]

We configured our provider extension to use a subfolder Resource/Private/Provider for the three template directories (Layouts, Templates, Partials).

When adding a new content element to a column using the third or second or any other button between other content elements it can happen that the dropdown fortx_fed_fcefile will be empty.

It seems to be unable to find the individual typoscript configuration and falling back on the default template paths.

My current solution is to not use custom paths for templates in provider extensions.