Memory leak in Source Code Editing when having thousand of words

Question

Memory leak in Source Code Editing when having thousand of words

syhrimr opened this issue a year ago · comments

Syahri Maulana Ramadhan commented a year ago

Type of report

Bug

Provide detailed reproduction steps (if any)

Go to https://ckeditor.com/docs/ckeditor4/latest/examples/sourcearea.html
In either source code area or dialog, input a long content. In here I input a around 5,9k words long content with images and computed style texts. You can put this code that I used to reproduce the issue https://codepen.io/syhrimr/pen/JjeGVgo

3. Check the dev tools and there will be an error

Error: attribute viewBox: Expected number, "0 0 100% 4".

Expected result

Fixed the error and memory leak.

Actual result

In my case, since the content is long, the error occurs more than 20k times and causes memory leak.

Other details

Browser: Microsoft Edge version 114.0.1823.43 (Official build) (64-bit)
OS: Windows 10 Pro 10.0.19044
CKEditor version: 4.13.12 and 4.21.0
Installed CKEditor plugins: Standard Plugins

Tomasz Jakut · Answer 1 · Thu Jun 15 2023 20:35:08 GMT+0800 (China Standard Time)

Could you provide a content used for the reproduction?

Syahri Maulana Ramadhan · Answer 2 · Fri Jun 16 2023 11:54:00 GMT+0800 (China Standard Time)

@Comandeer here the content code that used for reproduction, I put it on Codepen https://codepen.io/syhrimr/pen/JjeGVgo

Tomasz Jakut · Answer 3 · Tue Jun 20 2023 05:23:37 GMT+0800 (China Standard Time)

I'm not able to reproduce the error. I've tried pasting the content into the CKEditor 4 sample and the browser's console does not show any error connected to SVG.

Syahri Maulana Ramadhan · Answer 4 · Thu Jun 22 2023 18:26:18 GMT+0800 (China Standard Time)

Okay, so I found the root cause. The memory leak was coming from my browser extensions Microsoft Editor: Spelling and Grammar. Seems it got a bug with the error I reported above coming from it and aggressively check every text in the RTE.