[Webkit-unassigned] [Bug 186186] New: Incorrect caret position while scrolling in an contentEditable component

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186186

            Bug ID: 186186
           Summary: Incorrect caret position while scrolling in an
                    contentEditable component
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: richardyrh928 at gmail.com
                CC: wenson_hsieh at apple.com

Created attachment 341739

  --> https://bugs.webkit.org/attachment.cgi?id=341739&action=review

Image demonstrating bug.

To reproduce, create a contentEditable div with overflowing content and overflow: scroll. Here's a pre-made fiddle for you convenience: https://jsfiddle.net/vyyu0rwc/3/
Click on the content so a caret shows and flashes; now scroll the content (with the caret visible) and notice how the caret position is fixed in place before it disappears, instead of scrolling along with the content. Notice in the attachment (it's pretty bad screenshot), how the caret can appear between lines when scrolling the content due to this bug.

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