Upgrade to Debian 11 and now LibreOffice Calc doesn't show preview during text import

I recently upgraded to debian 11 with libreoffice 7, but now my text import isn’t showing the preview anymore so I can’t select types for fields/columns. I’ve tried playing with the import options but I can’t get the preview to appear.

It has something to do with the widgets provided by the environment.
Try to start LibreOffice like this and see if it makes a difference:

SAL_USE_VCLPLUGIN=gen libreoffice

works! how do i make that the default?

uninstalled libreoffice-kf5 and it works now

as an added bonus, i can see the icons on buttons in the toolbar, too!