It seems to me, that in Preferences > Folders > Folder Formats "Folder Type Formats" ("Local Drives") have a higher priority than "Content File Formats" ("Documents", "Music", "Pictures", "Video/Movies").
I don't want the settings of "Local Drives" to affect my Music Folder which is also on a local drive:
But the other folders of my local drives shall be affected.
Sorry, but I didn't understand what Wowbagger meant in his thread:
I solved it. It's not enough to checkmark it in Display > Auto-size all columns in Details and Power Modes. It must be especially checked in Columns.
So I unchecked "Auto-size all columns in Details and Power Modes and checkmarked it on Columns > Filename > Auto. And then I checkmarked it again in Display > Auto-size all columns in Details and Power Modes.
After doing this the Filename is not affected by the settings in "Local Drives" any more. The difference can be seen by comparing the file /dopusdata/Formats/contenttype.off before and after:
