[widgets][mainwindow] known issue pointer to app version

Fixes #253
4 jobs for 253_known_issue_version_tracker in 15 minutes and 21 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #190929
docker
build_linux_36

00:06:18

passed #190930
docker
build_linux_37

00:06:12

passed #190927
macosx
build_macosx_36

00:15:21

passed #190928
macosx
build_macosx_37

00:14:53