[Webkit-unassigned] [Bug 152332] New: REGRESSION: Selecting contents in iframe scrolls the page down

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=152332

            Bug ID: 152332
           Summary: REGRESSION: Selecting contents in iframe scrolls the
                    page down
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: Mac OS X 10.11
            Status: NEW
          Severity: Blocker
          Priority: P1
         Component: Frames
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: spocke at moxiecode.com

Created attachment 267451
  --> https://bugs.webkit.org/attachment.cgi?id=267451&action=review
Shows the bug when selecting contents.

1. Open the attached iframe-selection-test.html
2. Scroll down to iframe.
3. Try to select contents inside the iframe.
4. Observe that the parent page is scrolled down.

This happens in Safari 9.0.2 and the latest nightly build (r194132).

This is a major regression and there is no way for us to prevent this from happening from the JS side. It affects editors like TinyMCE but also any iframe on pages with scroll.

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