CSS issue in nested block quotes with very long lines in Live Preview mode

Steps to reproduce

  1. Have Live Preview mode on.
  2. Enter the following text.

> This is a blockquote.
>
> > This is a nested blockquote.
> > It looks fines with multiple short lines separates by a linebreak.
>
> > When a line is too long inside a nested blockquote, it wraps around, and that’s where you see the little nested blockquote’s left-hand rule be too short. It doesn’t take the wrapping into account.
>
> Hopefully an easy fix! 

Expected result

The second nested block quote has a left-hand rule going all the way down like the first nested block quote.

Actual result

The left-hand rule of the second nested block quote doesn’t take the line wrapping into account.

image