Got "Uncaught DOMException: Failed to execute 'setEnd' on 'Range'" when operating on a mention

[dsidharta]

Type of report

Bug

Provide detailed reproduction steps (if any)

1. Open https://sdk.ckeditor.com/samples/mentions.html.
2. Make sure that the developer console is open.
3. Mention one of the users, say, "@ ajames" (without the space).
4. Delete the mention added in step 3 one character at a time.

May need to repeat steps 3 and 4 multiple times for the Exception to happen.

Expected result

No errors in developer console.

Actual result

Got the following errors:

Uncaught DOMException: Failed to execute 'setEnd' on 'Range': The offset 6 is larger than the node's length (5).
at window.CKEDITOR.window.CKEDITOR.dom.CKEDITOR.dom.range.getClientRects (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:187:3)
at getViewPosition (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/plugins/autocomplete/plugin.js?t=I6D6:14:470)
at g.updatePosition (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/plugins/autocomplete/plugin.js?t=I6D6:18:76)
at f.viewRepositionListener (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/plugins/autocomplete/plugin.js?t=I6D6:11:217)
at f. (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/plugins/autocomplete/plugin.js?t=I6D6:9:107)
at a.h (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:10:70)
at a. (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:11:433)
at a.window.CKEDITOR.window.CKEDITOR.dom.CKEDITOR.editor.CKEDITOR.editor.fire (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:13:97)
at CKEDITOR.plugins.undo.UndoManager.type (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:1079:373)
at CKEDITOR.plugins.undo.NativeEditingHandler.onKeyup (https://sdk.ckeditor.com/vendor/ckeditor/4.10.0/ckeditor.js:1090:121)

Other details

• Browser: Chrome, Safari

[mlewand]

As described it does not reproduce all the time, for me I was able to repro it when I had the inserted mention phrase in the middle of the plain text.

Looks like an issue with our webkit filling characters.

[jacekbogdanski]

I'm also able to reproduce the issue. It seems like it occurs more often when you start deleting adjacent text node.

[pupi1985]

I can also reproduce this issue. I also faced another one which I randomly get while trying to reproduce this one. Not sure if it is related:

plugin.js?t=I6D6:7 Uncaught TypeError: Cannot read property 'element' of null
    at Object.CKEDITOR.plugins.textMatch.getRangeInText (plugin.js?t=I6D6:7)
    at Object.CKEDITOR.plugins.textMatch.match (plugin.js?t=I6D6:6)
    at b.callback (plugin.js?t=I6D6:6)
    at b.<anonymous> (plugin.js?t=I6D6:5)
    at c (ckeditor.js:27)

[jacekbogdanski]

@pupi1985 this issue is related to #2373

[engineering-this]

@dennisjsq @pupi1985 thanks for reporting the issue, but I'm closing it as duplicate of #2194. Further discussion should be hold there or in PR #2370 which holds the fix.