Side-by-Side Mode Scroll Issue with Long Texts

[shinohara-f]

Describe the bug
When using EasyMDE in side-by-side mode with a large body of text (over 1000 lines), the scroll position does not match between the two panes initially. However, once scrolled all the way to the bottom, the scrolling synchronization starts to function correctly.

To Reproduce

• Input more than 1000 lines of text into EasyMDE.
• Switch to side-by-side mode.
• Scroll the panes without reaching the bottom. Notice the scrolling position mismatch.
• Scroll all the way to the bottom and then scroll up and down. The scrolling position should now be synchronized.

Expected behavior
The scrolling position should be synchronized between the two panes in side-by-side mode, regardless of the length of the text or the initial scroll position.

Screenshots

Version information

OS: macOS 13.3.1 (a)
Browser: Chrome 115.0.5790.114
EasyMDE version: 2.18.0

Additional context
This issue makes navigating through large documents inconvenient and disorienting, and I'm hoping it can be addressed. This mismatch in scroll position is only corrected after scrolling all the way to the bottom.

[Ionaru]

Thank you for the report! I'll have a look at it.

[shinohara-f]

@Ionaru

Hello! I was wondering if there has been any progress on this bug.
If you're already working on a fix, that's great—I'll leave it to you.

However, if you haven't had the time to look into it yet, I'd be willing to help out if I can.
I should note that I have absolutely no knowledge of this library's code, so any pointers or ideas you could provide would be extremely helpful.

Thank you.

[Ionaru]

Hello!

I haven't had the chance to look at this issue in-depth yet, my apologies.

As far as I'm aware, the editor code relies on CodeMirror to handle scrolling, but I could be mistaken.