Additional styles preserved when copy/paste or drag/drop text from external source

[f1ames]

Are you reporting a feature request or a bug?

Bug

Provide detailed reproduction steps (if any)

1. Go to https://sdk.ckeditor.com/samples/fullpreset.html.
2. Copy/paste or drag/drop some text from outside of the editor to editor.

Expected result

Inserted text matches styles of the context.

Actual result

Inserted text preserves all its original styles.

I think the similar behaviour was the reason why pasteFilter: 'semantic-content' were introduced in Blink/Webkit browsers so maybe it can be reused here.

Other details

• Browser: Edge 16+ (preview)
• OS: Windows 10
• CKEditor version: 4.7.3
• Installed CKEditor plugins: clipboard

[f1ames]

It will be a good idea to wait with this fix for #468.

[mlewand]

Duplicate of #921.

[f1ames]

@mlewand Are you sure it is a duplicate of #921?

#921 is about incorrect transfer type recognition and this one is about preserving styles (btw. fixing transfer type recognition does not fix this issue).

[mlewand]

@f1ames actually I might have done it too quickly. Above issue relates only to drag & drop, right?

However I wasn't able to reproduce it on https://sdk.ckeditor.com/samples/fullpreset.html with Microsoft EdgeHTML 15.15063, is it Edge 16 only thing?

[f1ames]

@mlewand, no it is both copy/paste and drag/drop. You are right that it is only Edge 16 (updated Browser field to Edge 16+ so it is more visible).

[f1ames]

@mlewand considering my latest comment, do you think we should reopen this issue?

[mlewand]

K let's keep an eye on it as a separate issue.

[f1ames]

Looks like upstream https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14591438/, but still may be good to consider a fix if Edge team will not be willing to do so.

[Dumluregn]

This issue is no longer reproducible in the latest Edge browser version.