The filter at 'open shifts' is now almost the same as the filter at 'All shifts'. This makes it a bit clearer and also has more options.

The big difference is that in 'open shifts', you only see the shifts no one has subscribed to yet. This is especially useful if most shifts have already been registered for.

Another difference with the 'Open shifts' page is that 'All shifts' also shows the private groups you cannot subscribe to (if the group is also set as visible by the administrator).