From its docstring I quote:

"It's a powerful feature but it can be hard to understand what's going on"

You can say that again.

I'm trying to use this widget in a Quixote Form and running into a road block.

My scenario: I have an event details page that contains a few widgets.
id (string)
language (option_select)
title (string)
description (text)

I'm hoping to use an OptionSelectWidget to change a form to reload and
reassign title, description to language specific values (being returned
from a zodb).

The behaviour I am experiencing is that when an option is selected from the
option_select widget, the form reloads (if I have a submit button added
elsewhere) and displays the original values assigned to the string and text
widgets.

If I have no submit button defined, the form's action method is called.
Somewhere I read this is correct.

What I need to be able to do is re-fill the text/string widget values with
the language appropriate data and let the user make edits and/or deletions.

I seem to be going around in circles with this and would appreciate being
steered straight again.

I suppose I could just use the widgets by themselves but have grown fond of
the packaging of everything in quixote.form.