func defaultContentConfiguration() inside the extensions of NSCollectionViewItem & NSTableCellView needs to return different default content configurations depending of the style of it's table/collection view.
Inside a source list / sidebar table view (NSTableView.Style = .sourceList) should e.g. return a different default content configuration than compared to a plain table view (NSTableView.Style = .sourceList)
func defaultContentConfiguration() inside the extensions of NSCollectionViewItem & NSTableCellView needs to return different default content configurations depending of the style of it's table/collection view.
Inside a source list / sidebar table view (NSTableView.Style = .sourceList) should e.g. return a different default content configuration than compared to a plain table view (NSTableView.Style = .sourceList)