[Webkit-unassigned] [Bug 213336] New: Deleting line with backspace in textarea does not reflect in UI

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=213336

            Bug ID: 213336
           Summary: Deleting line with backspace in textarea does not
                    reflect in UI
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rv.maksim at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 402192

  --> https://bugs.webkit.org/attachment.cgi?id=402192&action=review

Image of actual result after pressing Backspace. No empty line in JS but still rendered by Browser

Steps to reproduce:

- Open `data:text/html,<textarea>foo%0A%0Abar%0Azoo</textarea>`
- Set cursor under foo

```
foo
<cursor>
bar
zoo
```
- Remove empty line by pressing [backspace]


Expected Result:
The line should be deleted and rendered as deleted

Actual Result:
Textarea still show empty but the value has changed


Safari Version 13.1.1 (15609.2.9.1.2)

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