[Bug] Rendering Grid offscreen

[hyyan]

We have programs where we build the grid offscreen before showing the window, and it does not appear to work in BUI. However, the sample I made works in DWC.

currenlty, this fails in BUI with the following error.:

TypeError: Cannot read properties of null (reading '$gw_wnd')

use ::BBjGridExWidget/BBjGridExWidget.bbj::BBjGridExWidget
 
a = new GridSample()
release
 
class public GridSample
    field public BBjWindow win!
    field public BBjButton btn!
 
    field public BBjWindow secondWindow!
 
    field public BBjSysGui gui!
    
    method public GridSample()
        guiChan! = unt; open (guiChan!)"X0"
        #gui! = BBjAPI().getSysGui()
        #win! = #gui!.addWindow(0, 0, 200, 200, "Grid Sample", $00001000$)
        btn! = #win!.addButton(3213, 10, 10, 100, 20,  "Show Grid Window")
        btn!.setCallback(btn!.ON_BUTTON_PUSH, #this!, "showSecondWindow")
 
        #secondWindow! = #gui!.addWindow(93201, 9, 0, 700, 350, "edit window", $00001012$)
        grid! = new BBjGridExWidget(#secondWindow!, #secondWindow!.getAvailableControlID(), 10, 75, 610, 320)
 
        #secondWindow!.setCallback(#secondWindow!.ON_CLOSE, #this!, "closeSecondWindow")
 
        process_events
    methodend
 
    method public void showSecondWindow(BBjEvent e!)
        #secondWindow!.setVisible(1)
    methodend
 
    method public void closeSecondWindow(BBjEvent e!)
        #secondWindow!.setVisible(0)
        #win!.focus()
    methodend
 
classend