If the item has a SelfSizing delegate returning a positive value for the cross-axis size and has Stretch set for its AlignSelf property and there is available space in the cross-axis plane, the item's cross-axis size will not change to fill up the remaining space.
If the item has a SelfSizing delegate returning a positive value for the cross-axis size and has Stretch set for its AlignSelf property and there is available space in the cross-axis plane, the item's cross-axis size will not change to fill up the remaining space.