L Tennant Reporter
	Description • 8 years ago

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160728203720

Steps to reproduce:

1. Set dom.event.clipboardevents.enabled to disabled.
2. Go to a website with a large input field like http://jsbeautifier.org/
3. Try to copy over 1000 characters from this field to another application.


Actual results:

A single dash appears.


Expected results:

The data should have been pasted as normal.

	L Tennant Reporter
	Comment 1 • 8 years ago

See also this post from 11 months ago which describes the same problem: https://www.reddit.com/r/firefox/comments/3htqfb/copying_too_much_text_in_some_text_editors_only/?st=irt680xv&sh=11f72149

	Justin [:JW_SoftvisionQA]
	Comment 2 • 8 years ago

I can reproduce this issue on Mozilla/5.0 (Windows NT 6.3; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0

Regression Range:
Good 2012-02-14
Bad  2012-02-15

	Neil Deakin
	Comment 3 • 8 years ago

It looks like the codemirror editor code being used here uses some hackery to make the actual focus and selection and the visual selection different, and thus, the actual selection is just '-' when the text is over 1000 characters. Chrome also has the value '-' for the focused textbox, but some implementation detail causes it to retrieve the expected value when copying. I don't know what that detail is and it would be better if the CodeMirror developers investigate this.