Mimetype filter in the FileChooser dialog to import .ics icalendar files is not working
In 43.x/44.x/git, the FileChooser when using the "Open a File" button from the "Import a calendar" feature of the "Manage calendars" dialog... does not filter mimetypes to ics / icalendar, it shows some sort of invalid filter and displays all the files instead.
Yet, the GcalFileChooserButton
class references a .ui file that supposedly already has the filters, but for some unknown reason they are not working:
<patterns>
<pattern>*.ical</pattern>
<pattern>*.icalendar</pattern>
<pattern>*.ics</pattern>
<pattern>*.ifb</pattern>
<pattern>*.vcs</pattern>
</patterns>
Hopefully this is just something we're doing wrong on our side, and not actually a bug in Gtk's FileChooser…