Copy/paste data in read-only mode in IE8-11 results in error

[jswiderski]

Are you reporting a feature request or a bug?

Bug

Check if the issue is already reported

These are not duplicates but very similar issues:

• Browser crashes when we try to copy/paste data from spreadsheet #449
• https://dev.ckeditor.com/ticket/11825
• Clicking into widget in read-only throw an error in IE #888

Provide detailed reproduction steps (if any)

1. Open the read-only sample
2. Make editor read-only
3. Select some text in editor (after making it read-only)
4. Press Ctrl+V

Expected result

Nothing happens

Actual result

After pressing Ctrl error is thrown:

Error:
Message: Unspecified error
Line: 2185
URI: ckeditor/code/selection.js
Code:

// Select the range.
sel.addRange( nativeRange );

Other details

• Browser: IE8-11
• OS: Windows
• CKEditor version: IE11 - 4.7.1; IE8 - 4.7.0
• Installed CKEditor plugins: full preset was used

[mlewand]

It might be related to #1181.

[jacekbogdanski]

This bug has been fixed with #1692. It's not related to #449, #888, #1181, https://dev.ckeditor.com/ticket/11825 (issues have not been fixed with mentioned PR).

[mlewand]

A fix for this issue is ready and has been merged to our upcoming release. It will be available in 4.10.1.

However you can already see it on CKEditor preview builds.

I have forked the original codepen so that it uses preview CKE4 build here: https://codepen.io/mlewand/pen/rroRGQ