At high levels of zoom, the home tour can behave unexpectedly

1. The dialog can flicker at really high levels of zoom, when it gets out of the base window.

2. The content of the dialog will sometimes be hidden because of scrolling.

I could reproduce these bugs on a 2K screen with XWiki standard (Iceberg), around 200% to 300% zoom. These bugs should happen faster if you reduce your window size.

1. is easy to replicate (just zoom a bunch while the tour is open), 2. happens only on one step for the home tour. If a choice must be made, put emphasis on solving 1.