Cannot update panel with views exposed form and required exposed filters

Problem/Motivation

You have:

1. A view with Exposed form in block
2. Exposed form style "input required" - May not be relevant.
3. An exposed filter which is required.
4. The exposed form is position in a panel.

You can now no longer update the panel because panels renders the panes and that causes the form validation errors on the exposed form (which get suppressed) $form['executed'] is therefore never true in ctools_wizard_multistep_form() and the panel doesn't get saved.

Proposed resolution

Not sure at this point.

Remaining tasks

Discuss, fix or document?

User interface changes

n/a

API changes

n/a