Facets exposed form block is empty if not on views page

I'm also experiencing this issue in a new project of ours using Facets 3.0.0-beta4, exactly as described above.

On the view page itself, everything is fine. Anywhere else, all the facets are empty :(

I'll see if I can find anything, haven't had the time yet to debug.

I haven't got the time to fully debug this in facets itself, but in my case it was solvable by rendering it in a custom block like below.
I had to render in a custom block anyway because I wanted to add extra items before and after the exposed filters, so this was a quick fix for me.

/** @var \Drupal\views\Plugin\Block\ViewsExposedFilterBlock $plugin_block */
$plugin_block = $this->blockManager->createInstance('views_exposed_filter_block:events-overview');

// Make sure the facets are populated.
$view = $plugin_block->getViewExecutable();
$view->preExecute();
$view->execute();

return [
  // ...
  'filters' => $plugin_block->build(),
  // ...
];