EDITED: I think my problem was the combobox with value from another SP list unable to retain its value when edit the form.
As the subject explain, I customized combo box to tie up with an SharePoint text column. Everything works fine follow the other post. > Re: Can I replace a text input field from SharePoi... - Power Platform Community (microsoft.com)
However, whenever I edit my form, I wasn't able to resubmit - Power Apps detected that my Title field is blank. As such, I need to reselect from the combobox list to populate the Title field with a value (even though it already has value).
Any ideas how to resolve this?
