There was a fix that went out for 1.1.5 release which needs to make it to master: 

https://github.com/jenkinsci/blueocean-plugin/commit/a4fdb665ff6599140e618f22c04b3511bafe0509

I tried cherry picking - a small number of conflicts - these will need to be resolved as this contains valuable and necessary fixes. 

This is marked as blocking as it needs to be done before 1.2 can be released