Current behavior

when there is many image in a single note,
the editor pane and render pane have some dislocation,
as the screenshop shows

Expected behavior

what's expected is when scrolling editor pane to the bottom, the render pane also scrolls to the bottom

Steps to reproduce

just pasting many many image into a single note can reproduce this issue

Environment

• Version : 0.11.9
• OS Version and name : archlinux

something else to say

maybe it is difficult to locate every line of markdown, but please let right pane scroll to bottom if left pane scolled to bottom