[UE5.2.1, Bug report] Audio button accessed null on properties.

Log spam after creating a UserWidget deriving from AudioButton

LogScript: Warning: Accessed None trying to read property WidgetSwitchRightCurveBottom
    NewWidgetBlueprint_C /AAA/Levels/BBB.BBB:NewWidgetBlueprint_C_3
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:RefreshCorners:012E
LogScript: Warning: Accessed None trying to read property ValueText
    NewWidgetBlueprint_C /Engine/Transient.World_8:NewWidgetBlueprint_C_5
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:ExecuteUbergraph_AudioButtonToggle:0053
LogScript: Warning: Accessed None trying to read property WidgetSwitchLeftTop
    NewWidgetBlueprint_C /Engine/Transient.World_8:NewWidgetBlueprint_C_5
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:RefreshCorners:0032
LogScript: Warning: Accessed None trying to read property WidgetSwitchRightCurveTop
    NewWidgetBlueprint_C /Engine/Transient.World_8:NewWidgetBlueprint_C_5
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:RefreshCorners:0086
LogScript: Warning: Accessed None trying to read property WidgetSwitchLeftBottom
    NewWidgetBlueprint_C /Engine/Transient.World_8:NewWidgetBlueprint_C_5
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:RefreshCorners:00DA
LogScript: Warning: Accessed None trying to read property WidgetSwitchRightCurveBottom
    NewWidgetBlueprint_C /Engine/Transient.World_8:NewWidgetBlueprint_C_5
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:RefreshCorners:012E
LogScript: Warning: Accessed None trying to read property ValueText
    NewWidgetBlueprint_C /AAA/Levels/BBB.BBB:NewWidgetBlueprint_C_3
    Function /AudioWidgets/AudioButtonToggle/AudioButtonToggle.AudioButtonToggle_C:ExecuteUbergraph_AudioButtonToggle:0053