I have been working with a painful bug for quite some time. I hoped it would be fixed with Magnolia 6, but that doesn't look like it. It seems to only appear on Firefox with Linux (Firefox 67.0.4 - Arch Linux), though I'm not quite sure.

The following steps bring up the bug:

1. Login on demo.magnolia-cms.com as superuser
2. Go to configurations app
3. Scroll down in the treeview
4. Download a definition from a module via sidebar
5. the treeview resets itself to the original view, i.e. it is scrolled to the very top  

the video quality is bad, but the bug is obvious: deepin-screen-recorder_Navigator_20190704155408.mp4