Leave Page Alert

With Stripe extension 5.0 installed on a WordPress site running the latest versions of Wordpress and CiviCRM I have the following problem when the Contribution Page does not have the option for a Confirmation Page selected but has both Stripe and Paypal as a payment option. When the user has the option of using a Credit Card (thru Stripe) or Paypal, selecting Paypal and clicking Contribute generates a javascript alert "Leave Page - your entries maybe lost ... ". If I have Facebook Pixel Code installed in the header of the page, then I do not get that warning, but the user has to click the Contribute button twice for it to process. Any suggestions are welcome. There are also problems when using the option for a Confirmation Page is selected but I will report on that at a later date.