https://github.com/jenkinsci/blueocean-plugin/pull/813
This issue is reproduced again.
MS edge:
Microsoft Edge 41.16299.1480.0
Microsoft EdgeHTML 16.16299
BlueOcean: 1.21.0 · Core 2.190.1
Should I create one new ticket?
Oh, I missed JENKINS-59291.
Will add info there.