[okular] [Bug 479070] New: Okular hangs when editing Chinese characters in inline note annotation

[TaoKY]

https://bugs.kde.org/show_bug.cgi?id=479070

            Bug ID: 479070
           Summary: Okular hangs when editing Chinese characters in inline
                    note annotation
    Classification: Applications
           Product: okular
           Version: 23.08.4
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: taoky1999 at gmail.com
  Target Milestone: ---

Created attachment 164470
  --> https://bugs.kde.org/attachment.cgi?id=164470&action=edit
thread apply all bt full on okular with the "你好：" reproducer

SUMMARY
When typing in with input methods (ibus or fcitx), or pasting Chinese
characters and editing inside inline note, Okular hangs.


STEPS TO REPRODUCE
1. Open a PDF file, and show more annotation tools.
2. Choose "Inline Note", click on any place
3. Copy "你好：" to the note, move cursor and delete any character
4. Or, if you could type with input methods, type in any Chinese characters
with methods like Pinyin, and type in "：" (aka, Shift + : with Chinese mode on)

OBSERVED RESULT

Okular hangs.

EXPECTED RESULT

Inline note being edited without any issue.

SOFTWARE/OS VERSIONS
Windows: N/A
macOS: N/A
Linux/KDE Plasma: Kernel 6.6.6-arch1-1
(available in About System)
KDE Plasma Version: N/A (I'm using GNOME 45)
KDE Frameworks Version: 5.113.0
Qt Version: 5.15.11

ADDITIONAL INFORMATION

This issue seems do not exist in Okular Windows version distributed by Windows
store.

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