Aleksander Nowodzinski

I can still reproduce it in Letters so the issue is valid. It's unlikely though we're going to schedule some time to work on it anytime soon. On the third...

> @oleq this is a first time I have seen something like this. Any ideas? I don't have any clue. What does it look like in the browser's web inspector?

I'm afraid this is nothing new (or related to Vue). I ran your code and checked the performance stats and this is what it looks like when a single editor...

You were right @Reinmar. I created the same builds with Vue.js stack (vue-cli) and without it (same plugins, same config, no content). In my scenario, the editor instance is created...

I was right about nasty polyfills. I used the ["modern mode"](https://cli.vuejs.org/guide/browser-compatibility.html#modern-mode) of Vue CLI and the bundle size decreased to 700kb (was 890, vanilla CKEditor is 640) and the performance...

@benjaminprojas Can you confirm dropping heavy polyfills speeds up the editor?

> which required some significant restructuring Why? It all comes down to babel configuration. The app should work fine in any modern browser without polyfills. Anyway, we're keeping track of...

The problem comes down to this demo https://codepen.io/anow_cks/pen/wvOMqdP After a quick look, I think to address this problem: * [`DomConverter#setDomElementAttribute()`](https://ckeditor.com/docs/ckeditor5/latest/api/module_engine_view_domconverter-DomConverter.html#function-setDomElementAttribute) would need to accept `value` object so when `key` is...

The change to separators looks fine but we need before/after screenshots for the following integrations to be sure it doesn't break anything: * block toolbar, * balloon toolbar, * inline...

> Adding screenshots of various builds, with various elements highlighted / focused to see how they look next to each other. LGTM. > AFAICS, image is the only widget with...