Merge branch 'mb-expandable-popup-qt-5.13-fix' of https://github.com/smartavionics/Cura into smartavionics-mb-expandable-popup-qt-5.13-fix

resources/qml/ExpandablePopup.qml

@@ -225,6 +225,7 @@ Item
             border.width: UM.Theme.getSize("default_lining").width
             border.color: UM.Theme.getColor("lining")
             radius: UM.Theme.getSize("default_radius").width
+            height: contentItem.implicitHeight || content.height
         }
 
         contentItem: Item {}