Focus strange behaviour
the standard Oracle Applications form POXPOEPO has been customized to meet the client needs. I wasn't involved in the changes made to the form and I'm not sure about how much exactly was customized.
Recently a navigation issue has come up with this form. As long as I use the mouse, everything is fine, but if I mix tabulation navigation along with mouse navigation, the focus gets stuck in one field, although the cursor is shown to be in another field (I can even type something in that other field, although the focus is not there).
This is annoying when I'm in a LOV, because when you click on the 3 dots to pop up the LOV, the error FRM-41800 is raised (List of Value not available for this Field). Even if I click on the field to which the LOV is attached, the cursor will be shown but the focus remains in another field, hence the error.