Thanks for your investigation/feedback. Very helpful.
So two things have hit at the same time.
Chrome 76 doesnt allow the UI to be controlled in the same manner as we currently do, and a windows update has changed some of the undocumented API calls we use.
You can fix the window opening on screen by doing a full reinstall (deleting your library and settings) OR by deleting the file C:\Users\<your username>\AppData\Local\Jaksta Media Recorder 7\JakstaDVRvd.18362.generated.dll.
This auto generated file will be regenerated with the new undocumented api calls we use when the DVR starts recording.
Ive changed the installer to remove the autogenerated file on and upgrade install, but the Chrome changes Im still working on. DVR will then work but you will see the title bar in the DRV recording.
Ive updated the KB to reflect the current state of play: https://www.jaksta.com/support/windows/kb/windows-10-1809-dvr-recordings-are-blankblack-videos-6000221913
From CRS @ 28 Aug 2019 06:08