Filters, Languages, Categories gone

Hello,

All my filters, languages, categories are gone in new .glyphs files.
Adding a new filter, the old filters appear in that file, but the other sections are still empty.

Opening an old file, everything is there.

Lately I have not messed with the program files, nor the filters, as far as I can remember.
And this appeared just this morning, yesterday it seemed normal.

How can I resolve this?

New file:

Old file:

and