Bug? Is this a bug or my device's fault ?

[strat]

Hello.

When I convert my old B4A Word Game app to B4I, I encountered button click problem. The button at the rightmost doesn't always catch click event. It only works when I press left side of the button. Button number depends on word length so it changes at every level.
I tried other apps that have buttons on the right side without any click problem.

To show this I wrote a simple program. Please try this sample.
Error appears when clicked on the number 2. On some buttons, click event is not catched.
When buttons at the left, Click problem doesn't occur.

'Code module
#Region  Project Attributes
    #ApplicationLabel: Click
    #Version: 1.0.0
    'Orientation possible values: Portrait, LandscapeLeft, LandscapeRight and PortraitUpsideDown
    #iPhoneOrientations: Portrait
    #iPadOrientations: Portrait
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
    Public App As Application
    Public NavControl As NavigationController
    Private Page1 As Page


    Private Button1 As Button
    Private Button2 As Button
    Private Button3 As Button
    Private Button4 As Button
    Private Button5 As Button
    Private Button6 As Button
    Private Button7 As Button
    Private Button8 As Button
    Private Label1 As Label
    Private leftbutton,rightbutton As Button
    Dim i1,i2,i3,i4,i5,i6,i7,i8 As Int
End Sub

Private Sub Application_Start (Nav As NavigationController)
    NavControl = Nav
    Page1.Initialize("Page1")
    Page1.Title = "Page 1"
    Page1.RootPanel.Color = Colors.White
    Label1.Initialize("Label1")
    Button1.Initialize("Button1",Button1.STYLE_SYSTEM)
    Button2.Initialize("Button2",Button2.STYLE_SYSTEM)
    Button3.Initialize("Button3",Button3.STYLE_SYSTEM)
    Button4.Initialize("Button4",Button4.STYLE_SYSTEM)
    Button5.Initialize("Button5",Button5.STYLE_SYSTEM)
    Button6.Initialize("Button6",Button6.STYLE_SYSTEM)
    Button7.Initialize("Button7",Button7.STYLE_SYSTEM)
    Button8.Initialize("Button8",Button8.STYLE_SYSTEM)
    leftbutton.Initialize("leftbutton",leftbutton.STYLE_SYSTEM)
    rightbutton.Initialize("rightbutton",rightbutton.STYLE_SYSTEM)
   
    Page1.RootPanel.AddView(Button1,80%x,10%y,20%x,8%y)
    Page1.RootPanel.AddView(Button2,80%x,20%y,20%x,8%y)
    Page1.RootPanel.AddView(Button3,80%x,30%y,20%x,8%y)
    Page1.RootPanel.AddView(Button4,80%x,40%y,20%x,8%y)
    Page1.RootPanel.AddView(Button5,80%x,50%y,20%x,8%y)
    Page1.RootPanel.AddView(Button6,80%x,60%y,20%x,8%y)
    Page1.RootPanel.AddView(Button7,80%x,70%y,20%x,8%y)
    Page1.RootPanel.AddView(Button8,80%x,80%y,20%x,8%y)
   
    Page1.RootPanel.AddView(leftbutton,35%x,50%y,30%x,15%y)
    Page1.RootPanel.AddView(rightbutton,35%x,70%y,30%x,15%y)
   
    Page1.RootPanel.AddView(Label1,40%x,30%y,20%x,10%y)
   
    NavControl.ShowPage(Page1)
    NavControl.NavigationBarVisible = False
    NavControl.ToolBarVisible = False
   
    Button1.Left=100%x-Button1.Width
    Button2.Left=100%x-Button1.Width
    Button3.Left=100%x-Button1.Width
    Button4.Left=100%x-Button1.Width
    Button5.Left=100%x-Button1.Width
    Button6.Left=100%x-Button1.Width
    Button7.Left=100%x-Button1.Width
    Button8.Left=100%x-Button1.Width
   
    Button1.Color=Colors.LightGray
    Button2.Color=Colors.LightGray
    Button3.Color=Colors.LightGray
    Button4.Color=Colors.LightGray
    Button5.Color=Colors.LightGray
    Button6.Color=Colors.LightGray
    Button7.Color=Colors.LightGray
    Button8.Color=Colors.LightGray
   
    Button1.Text="1       2"
    Button2.Text="1       2"
    Button3.Text="1       2"
    Button4.Text="1       2"
    Button5.Text="1       2"
    Button6.Text="1       2"
    Button7.Text="1       2"
    Button8.Text="1       2"
    leftbutton.Color=Colors.Green
    rightbutton.Color=Colors.Cyan
    leftbutton.Text="<<<<<"
    rightbutton.Text=">>>>"
    Button1.Top=10%y
    Button2.Top=20%y
    Button3.Top=30%y
    Button4.Top=40%y
    Button5.Top=50%y
    Button6.Top=60%y
    Button7.Top=70%y
    Button8.Top=80%y

    i1=0
    i2=0
    i3=0
    i4=0
    i5=0
    i6=0
    i7=0
    i8=0
End Sub

Private Sub Page1_Resize(Width As Int, Height As Int)
   
End Sub

Private Sub Application_Background
   
End Sub

Sub Button8_Click
    i8=i8+1
    Label1.Text="8_"&i8
End Sub
Sub Button7_Click
    i7=i7+1
    Label1.Text="7_"&i7
End Sub
Sub Button6_Click
    i6=i6+1
    Label1.Text="6_"&i6
End Sub
Sub Button5_Click
    i5=i5+1
    Label1.Text="5_"&i5
End Sub
Sub Button4_Click
    i4=i4+1
    Label1.Text="4_"&i4
End Sub
Sub Button3_Click
    i3=i3+1
    Label1.Text="3_"&i3
End Sub
Sub Button2_Click
    i2=i2+1
    Label1.Text="2_"&i2
End Sub
Sub Button1_Click
    i1=i1+1
    Label1.Text="1_"&i1
End Sub

Sub leftbutton_Click
    Button1.Left=0
    Button2.Left=0
    Button3.Left=0
    Button4.Left=0
    Button5.Left=0
    Button6.Left=0
    Button7.Left=0
    Button8.Left=0
End Sub

Sub rightbutton_Click
    Button1.Left=100%x-Button1.Width
    Button2.Left=100%x-Button1.Width
    Button3.Left=100%x-Button1.Width
    Button4.Left=100%x-Button1.Width
    Button5.Left=100%x-Button1.Width
    Button6.Left=100%x-Button1.Width
    Button7.Left=100%x-Button1.Width
    Button8.Left=100%x-Button1.Width
End Sub

 

[Erel]

I wasn't able to reproduce it.

 

[strat]

This error comes up at only marked button in the real game. The rigt side of the button which has red dot doesn't catch click event, only the left side of the button catch click event.

There is no other object behind of this button but panel which its parent. I used imagview instead of buttons but result didn't changed.