UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36

Example URL:
https://www.youtube.com/watch?v=Vd2FTtu0sVE&lc=Ugz6a441HgR5IrRZHMJ4AaABAg.8hAo7DI0OQ08hBpag9d8Vm

Steps to reproduce the problem:
I have created a repo showing two ways to get the text selection.
First one via window.getSelection (using chrome.commands and content script).
Note: You will have to set the keyboard shortcut command in chrome://extensions/shortcuts
I used Ctrl+Shift+S.

Second one via clickData.selectionText (using chrome.contextMenus).

Test site: https://www.youtube.com/watch?v=Vd2FTtu0sVE&lc=Ugz6a441HgR5IrRZHMJ4AaABAg
Scroll down to "Highlighted comment" and click "View all <number> replies".
Find a comment with the "Read more". Select the whole comment via double click on comment text or via manual mouse selection, drag mouse until see the Thumbs up vote number getting selected.
Note: For the "Read more" to show up you will have to be logged in. Discovered that out when I tested in incognito mode.
I used the second comment from TheHektor89. https://www.youtube.com/watch?v=Vd2FTtu0sVE&lc=Ugz6a441HgR5IrRZHMJ4AaABAg.8hAo7DI0OQ08hBpag9d8Vm

The text selection output is shown in the background page -> console tab.
It demonstrates that the text selection incorrectly includes "Read more".

Tested with Chrome Version 67.0.3396.79.

What is the expected behavior?
"user-select: none" should be respected.

What went wrong?
"user-select: none" is ignored.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 67.0.3396.79  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

I am creating this issue on the suggestion of phistuck@gmail.com - https://bugs.chromium.org/p/chromium/issues/detail?id=147490#c56

I am also referencing that issue as it is related:  Issue 147490  - "Clipboard uses text that has user-select: none" - https://bugs.chromium.org/p/chromium/issues/detail?id=147490
 

Deleted: repo_bug_clipboard_sloppy_fix.zip 1.7 KB

repo_bug_clipboard_sloppy_fix.zip 1.7 KB Download