WebListbox.CellAt doesn't function after listbox has been sorted

62772 - WebListbox.CellAt doesn’t function after listbox has been sorted

feedback://showreport?report_id=62772

Xojo: Xojo 2020r1.2

Steps: It appears that once a WebListBox has been sorted, you can no longer use WebListbox.CellAt() to edit data.

Run attached project, sort the listbox on the first column (in reverse order), then try the ByRows and ByCells buttons.

Expected Result:
should work

Actual Result:
data ends up in the last row always

Workarounds:
AddRow seems to work, but only if you can add all data in a single command