in a file that grew bigger and bigger, section views stopped working properly at a certain time: Some objects that are within the view depth of a section are not displayed - but some are shown. So a section view now shows a section and an incomplete projection. Is this a known issue?
I have checked your file and I see the problem with the Querschnitt section view. It looks like the problem is the “Show projection” option is not working as sectioned objects appear in the section view, but projected objects don’t. I am reporting this issue; I’ll keep you updated about it.