Symptoms
When a Drop Down control has multiple values beginning with the same letter, for example 'P' , the control somehow remembers the previous selection made by the user.
Diagnoses
On a form is a DropDown control with the values 'Plain Line Track', 'Planning' and 'Plant'. When one clicks the control and type 'P' , Plain Line Track is highlighted. If one clears the selection, click on the Drop Down and type 'P' again, this time 'Planning' is selected. IF one repeats it again, Plant is selected. The expectation is that every time one clears the control and type 'P', the first available value should be highlighted i.e. Plain Line Track.
Resolution
Codefix was created an applied to all relevant environments.