hook_form_views_exposed_form_alter() called multiple times - for every filter

First: very nice module - good idea, so thanks

There is a new MR that tries to solve this.
However it doesn't eliminate multiple calls ... but it limit to 2 calls only
+ to have control in the alter hook with new form property $form['#selective_bef_view'].

I hope it helps.

It seems them MR "solution" it doesn't work "properly" ... as for all the filters to work it's need to have this view built and executed every time.

However, from Drupal\selective_better_exposed_filters\Plugin\better_exposed_filters\filter\SelectiveFilterBase
there is a view property that could be used in hook_form_views_exposed_form_alter() implementation

Example

/**
 * Implements hook_form_FORM_ID_alter() for views_exposed_form.
 */
function custom_module_form_views_exposed_form_alter(array &$form, FormStateInterface $form_state) {
  $view = $form_state->get('view');
  if (empty($view->selective_filter)) {
     // ... "do the alter".
  }
}

Question1: isn't easier as $form property
Ex. $form['#original_views_exposed_form'] = TRUE;

Question2: What about document this issue, README file and/or project page info.

Changed the issue Category to Support request
And status keep it Needs Review ... for now

p.s. sorry for the noise.