Incorrect compositionupdate events when converting characters in the Japanese keyboard.

Confirmed Issue #14483442 • Assigned to Naiyi J.


Nov 1, 2017
This issue is public.
Found in
  • Internet Explorer
Found in build #
Reported by 1 person

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Steps to reproduce

Using the Japanese IME, set the mode to Full-widh Katakana.

Use an event viewer such as to reproduce:

Steps to reproduce:

  1. Press a to get ‘ア’
  2. Press F8 to convert to half-width, changing to ‘ア’
  3. Press b to have ‘アb’

Obtained events:

Expected events:

  • compositionstart (data="")
  • compositionupdate(data="ア")
  • compositionupdate(data="ア")
  • compositionupdate(data="アb")
  • compositionend(data="アb")

Obtained events:

  • compositionstart (data="")
  • compositionupdate(data="ア")
  • compositionupdate(data="ア")
  • compositionupdate(data="b") <–
  • compositionend(data="b") <–

The converted character doesn’t appear in the composition events even though it is still in the textbox and part of the same composition.

This has been fixed in Edge 41.


Comments and activity

  • Microsoft Edge Team

    Changed Assigned To to “Steven K.”

    Changed Status to “Confirmed”

    Changed Assigned To from “Steven K.” to “Toshihito K.”

    Changed Assigned To from “Toshihito K.” to “Naiyi J.”

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