Add fab:menu_labels_showShadow with its default value to the sample XML
Add fab:menu_labels_showShadow with its default value to the sample XML

FloatingActionMenu clearly supports it, only it's missing from the sample
fercarcedo/FloatingActionButton,fengnanyue/FloatingActionButton-1,fchauveau/FloatingActionButton-1,honeyflyfish/FloatingActionButton,Clans/FloatingActionButton,simple88/FloatingActionButton,tankery/FloatingActionButton,jaohoang/FloatingActionButton,s0urc3d3v3l0pm3nt/FloatingActionButton,rayzone107/FloatingActionButton-1,imufun/FloatingActionButton,jsooriah/FloatingActionButton,olx-global/android-FloatingActionButton,NingSo/FloatingActionButton,dreambash/FloatingActionButton,yeojoy/FloatingActionButton,NetscoutEnterprise/FloatingActionMenu,hareshsandeep/FloatingActionButton,arifin123/FloatingActionButton,lolkittens/FloatingActionButton,bestwpw/FloatingActionButton,JosefHruska/FloatingActionButton,fnberta/FloatingActionButton,er-mo/FloatingActionButton