Icons selected are not very visible in the Filter panel

Steps:

1. Go to the map view
2. Filter by an icon
3. Reopen the filter view and try to search for the icon you filtered by

==> It is quite hard to so spot the selected icon/s currently, as only a small green checkmark is displayed on them. A good first step could be to highlight the selected ones more clearly. Or to also automatically expand the view on open to the categories of icons that are used for filtering, so that people can find them faster.