Multiline value breaks on duplicate + mix mode

[heruputra]

Prerequisites

• I am running the latest version
• I checked the documentation and found no answer
• I checked to make sure that this issue has not already been filed

💥 Demo Page

https://codepen.io/heruputra/pen/zYzqRZR

Explanation

Please see the video. Value in second and last line is not present.

multiple-value-break.mov

[yairEO]

I am investigating and this seems like a Chrome bug (chrome has a ton of bugs regarding conteneditable elements, and something there's even a regression. They don't seem to make any effort to fix them)