List selection issues with the default Markdown block

[HiDeoo]

With the default Markdown block, It seems that having text selected and expanding the selection to include a list entry item totally breaks the current selection by expanding it to the top of the document.

Here is a video repro:

https://user-images.githubusercontent.com/494699/218249623-dafd88cd-5118-4996-b578-dfbb7e8336a5.mp4