tsniatowski thanks for clarifying this. You are absolutely correct that this will affect basically every OS / browser combination except for Mac OS X when the OS is set to hide scrollbars by default.
nicu this was introduced when this code was added to index.jelly in blueocean-web:
html { overflow-y: scroll }
to prevent jitter when fast search would cause pipeline list to toggle between scroll and no-scroll. I think we'll need to find another way to accomplish that.
cliffmeyers edge, I assume?