Preview Scroll Jumping Bug

Please see attached .gif video, which showing the scrolling bar jumping around when I’m scrolling in the edit area.

Using Obsidian 0.11.5.
Mar-16-2021 (1.6 MB)

Please, resubmit this bug report with default theme (no css) and no third-party plugins enabled.

I tried. If turn on plugin safe mode + set theme to “none”, there’s no problem.
But when I switch almost any theme(e.g. minimal), “jumping round” happen again. Especially when there are pictures in markdown file.