UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Steps to reproduce the problem:
1. Put a lot of content in a contenteditable element (3000 characters for me)
2. Select a word and keep mouse pressed
3. Type something like 123

What is the expected behavior?
I expected that the selected content should be replace by 123

What went wrong?
The cursor keeps in same position and the content is replace by 321 instead of 123

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 61.0.3163.100  Channel: n/a
OS Version: OS X 10.12.6
Flash Version: 

Remember that to reproduce this problem you should put more than 3000 characters on contenteditable and remember to keep mouse pressed while you are typing.
 

Deleted: chrome-mouse-pressed.mp4 361 KB

	chrome-mouse-pressed.mp4 361 KB View Download