Single apostrophe converted to left quote incorrectly when text bolded

[awhig]

In the string

Cook's

if Cook is bolded, and not the apostrophe and the s, then the apostrophe is converted to a left quote, instead of a right quote.

A clearer example of how this is used is below.

Australian fashion editor Christine Centenera's street style is always on point.

I imagine this will happen for any formatting of the string where it occurs right before the apostrophe s.

Steps to reproduce:

1. In a new post, in visual editor, type the word "Cook's"
2. Highlight the string "Cook" and bold it, using the tool.
3. Preview the post

Rich

[miqrogroove]

Duplicate of #18549.