Weird sorting of files in the File-Open and Export dialogs

[izoalex]

I'm on GIMP 3.0.2 on Windows 10. Whenever I use the File-Open or File-Export dialogs, the files and folders are intermixed and sorted counter-alphabetically. When I try to fix it by applying alphabetical sorting, it resets back to unsorted the next time the dialog is opened. Is this a bug?

[Ofnuts]

This is the standard GTK3 file dialog. If you right-click you can tell it to sort directories first (and this seems to be remembered).

[izoalex]

The checkbox is remembered indeed, but it is not working as expected when reopening the dialog. Possibly - because the state of other sorting buttons is lost.