SELECT field scroll display out of sync

Fixed Issue #5920151

Details

Created
Dec 17, 2015
Privacy
This issue is public.
Reports
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Steps to reproduce

URL:

Repro Steps:

Navigate to http://magicm.awardspace.com/ie/16.html

  1. Click “option e” in the list.
  2. Click "Hide".
  3. Click "Show".
  4. Click "Scroll".
  5. Note that the list was scrolled with “option e” at the top.
  6. Click “option j” in the list.
  7. Click "Hide".
  8. Click "ShowAndScroll".
  9. Note that the list does not appear to be scrolled with “option j” at the top. (This is unexpected and is caused by the bug.)
  10. Move the mouse over the list, and note that the highlighted option is out of sync with the mouse cursor position. (This is unexpected and is caused by the bug.)
  11. Click the down arrow on the scroll bar.
  12. Note that the list did not only scroll one line. (This is unexpected and is caused by the bug.) Instead, scrolling jumped to the “correct” position and now everything is normal again.

Reproducable in IE Edge on Windows 10.
Reproducable in IE 11.20.10586.0 on Windows 10.
Reproducable in IE 11.0.9600.16428 on Windows 7.
NOT reproducable in IE 10.0.9200.16721 on Windows 7.

Expected Results:

When the mouse hovers over a SELECT list of options, for the OPTION under the mouse cursor to get highlighted.

Actual Results:

Dev Channel specific:

No

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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “Kamen M.”

      Changed Assigned To to “Bogdan B.”

      Changed Assigned To from “Bogdan B.” to “IE S.”

      Changed Status to “Not reproducible”

      Changed Assigned To to “Mona G.”

      Changed Status from “Not reproducible”

      Changed Assigned To from “Mona G.” to “Bogdan B.”

      Changed Status to “Confirmed”

    • I have further narrowed the root cause of this problem to setting selectedIndex while the SELECT has style.display=="none". A reduced testcase is available here: http://magicm.awardspace.com/ie/17.html

    • Microsoft Edge Team

      Changed Assigned To from “Bogdan B.” to “IE S.”

      Changed Status from “Confirmed” to “Fixed”

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