Opening an email in a new window, I frequently get "you can now close this window". Why?
The attached image displays perhaps 1 out of 5 times. A second request to "open the email in a new window" usually works. How do I stop this?
Additional System Details
Last pass. OpenH264 Video Codec provided by Cisco Systems, Inc. Widevine Content Decryption Module provided by Google Inc. Shockwave Flash (disabled)
- User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
When/how/why does this come up?