To reproduce this front-end bug, in the Job page, the job status filter disabled when new job notification popup on the right bottom of the screen.
I am on Version 5.1.2.
Thanks for reporting this issue. Thanks to the details you provided I was able to reproduce the problem. The issue has been added to our backlog and will be fixed in a future release.
Thanks for you help and have a nice day.
Bug has been fixed in the upcoming 8.0.3 release.