Closes #3209

lib/ios/RNNBottomTabsOptions.m

 	
 	if (self.drawBehind) {
 		if ([self.drawBehind boolValue]) {
+			[viewController setExtendedLayoutIncludesOpaqueBars:YES];
 			viewController.edgesForExtendedLayout |= UIRectEdgeBottom;
 		} else {
+			[viewController setExtendedLayoutIncludesOpaqueBars:NO];
 			viewController.edgesForExtendedLayout &= ~UIRectEdgeBottom;
 		}
 	}