Hi, the source preview jumping to the left when you scroll down is happening on a Mac as well. This is the link for the metric I was working on when I noticed: https://wikirate.org/Walk_Free_Foundation+MSA_policy_revised+Zalando_SE+2017?rp%5Bcompany%5D=Zalando+SE&rp%5Bmetric%5D=Walk+Free+Foundation%2BMSA+policy+%28revised%29&rp%5Byear%5D=2017&view=edit
Hi, I have detected the same bug, but the preview jumps to the right (on a Mac):