Updated kivymd

sbapp/kivymd/uix/dropdownitem/dropdownitem.kv

@@ -1,7 +1,7 @@
 <_Triangle>:
     canvas:
         Color:
-            rgba: root.theme_cls.text_color
+            rgba: app.theme_cls.text_color
         Triangle:
             points:
                 [ \
@@ -13,7 +13,8 @@
 
 <MDDropDownItem>
     orientation: "vertical"
-    adaptive_size: True
+    size_hint: None, None
+    size: self.minimum_size
     spacing: "5dp"
     padding: "5dp", "5dp", "5dp", 0
 

sbapp/kivymd/uix/dropdownitem/dropdownitem.py

@@ -15,13 +15,13 @@ Usage
     from kivymd.app import MDApp
 
     KV = '''
-    Screen
+    MDScreen
 
         MDDropDownItem:
             id: drop_item
             pos_hint: {'center_x': .5, 'center_y': .5}
             text: 'Item'
-            on_release: self.set_item("New Item")
+            on_release: print("Press item")
     '''
 
 
@@ -48,12 +48,12 @@ import os
 from kivy.lang import Builder
 from kivy.properties import NumericProperty, StringProperty
 from kivy.uix.behaviors import ButtonBehavior
+from kivy.uix.boxlayout import BoxLayout
 from kivy.uix.widget import Widget
 
 from kivymd import uix_path
 from kivymd.theming import ThemableBehavior
-from kivymd.uix.behaviors import FakeRectangularElevationBehavior
-from kivymd.uix.boxlayout import MDBoxLayout
+from kivymd.uix.behaviors import DeclarativeBehavior
 
 with open(
     os.path.join(uix_path, "dropdownitem", "dropdownitem.kv"), encoding="utf-8"
@@ -61,15 +61,12 @@ with open(
     Builder.load_string(kv_file.read())
 
 
-class _Triangle(ThemableBehavior, Widget):
+class _Triangle(Widget):
     pass
 
 
 class MDDropDownItem(
-    ThemableBehavior,
-    FakeRectangularElevationBehavior,
-    ButtonBehavior,
-    MDBoxLayout,
+    DeclarativeBehavior, ThemableBehavior, ButtonBehavior, BoxLayout
 ):
     text = StringProperty()
     """