Clear all selected when submit error, but not clear when submit success???

I have the problem when I submit form error, it clear all of selected value.
But when the submit form success, it not clear selected label (value is empty).

Start by reproducing the reported AutoForm submission behavior with the select2 input, comparing validation-error and successful submissions. Trace the package's select2 and AutoForm integration to find where selected labels and values are cleared; done means consistent clearing after both outcomes, with a regression test if the repository provides a test setup.

Written by the indexing model from the issue text.