We also have some issues with integration.
We fix it by changing one line in the file:
wp-content/plugins/official-facebook-pixel/integration/FacebookWordpressGravityForms.php:68
Replace it
<script>%sdocument.location.href=%s;%s</script>
with this
<script>%sfunction gformRedirect(){document.location.href=%s;}%s</script>
@jerox, please fix it in next updates
