Webhook error

Hi,

I set up a wekhook with events "Agreement sent", "Agreement participant completed", "Agreement workflow completed".

1st problem : When I send an agreement with 1 signer, my server receives as expected a wekhook notification with event "AGREEMENT_ACTION_REQUESTED", but another copy of it 1 minute later, and again 2 minutes later, and 4, and 8, 16....all with the same timestamp.

2nd problem : When  the signer signs the agreement, my server receives 2 notifications (which should be for events "Agreement participant completed", "Agreement workflow completed") which are copies of the first one (event "AGREEMENT_ACTION_REQUESTED").

Are these known bugs of Adobe Sign webhooks ?