In the FieldSelector, after clearing the chain and closing the popover, the very first page was removed from the widget `pages`. This was causing issue when trying to select a new field again. This commit ensures that the first page is not sliced.
In the FieldSelector, after clearing the chain and closing the popover, the very first page was removed from the widget `pages`. This was causing issue when trying to select a new field again. This commit ensures that the first page is not sliced.