Spell Check Underlining not working properly in large textboxes (Confluence)

[Martin Eglseder]

I have been using the Google Chrome Spell Checking together with Atlassian Confluence for a long time. Recently the underlining of misspelled words has become very unreliable, especially for longer documents. I can reproduce the effect in Confluence documents with a medium amount of words (about 600 words). If I edit such a document in confluence, the whole text gets printed in a large textbox. Underlining in this textbox does not work properly - specifically I have to move the mouse cursor to a paragraph, and only after switching to another paragraph the words in the former paragraph get underlined.

Another way to reproduce the effect is to scroll through the whole textbox by cursor keys. Is there any way to fix this behaviour? I am very sure that this worked properly some months ago.

I am using the built-in spell checking toll for chrome (no 3rd party extension). The issue also occurs on the latest  canary build.

I have added a video to watch the issue: https://drive.google.com/open?id=0B2kyUwSOKJH5QXF4aDlUNm9ZWDg 

Another test I did with wordpress instead of confluence proofed that this is not a general problem but only occurs in combination of confluence and chrome, because in wordpress editing a large article immediately underlined all the misspelled words. 

Sincerely,

Martin Eglseder

[Xiaocheng Hu]

Starting from M60, the Blink side spellchecker is rewritten to reduce input latency, which does introduce some different behavior.

But still this shouldn't happen. By design, spellchecker should be triggered on selection change.

Could you file a bug at crbug.com?

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