AddMenuItem3 then MsgBox2 hangs up the app on Samsung xCover3

Strange behavior, after users submitted me the pb, I made a sample app, which crashes after answering no
to the msgbox, sometimes after 2 or 3 times...

Any idea?

Code:

  #Region  Project Attributes
#ApplicationLabel: B4A Example
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: unspecified
#CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
#FullScreen: False...  

AddMenuItem3 then MsgBox2 hangs up the app on Samsung xCover3

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