craiea

I think it a very specific case, because i can't get it every time: 1.have another electron app runing 2.run colorpicker 3.open colorpicker settings (get 2x "new update available" notifications)...

 That should be the "domain" that you have to insert into unlayer dashboard>settings>embed>Allowed Domain(s). From what i have learned, example.com != www.example.com in "Allowed Domain(s)"