[konsole] [Bug 447830] New: Reflow broken for strings without newline

[Eric Armbruster]

https://bugs.kde.org/show_bug.cgi?id=447830

            Bug ID: 447830
           Summary: Reflow broken for strings without newline
           Product: konsole
           Version: 21.12.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: eric1.armbruster at gmail.com
  Target Milestone: ---

Created attachment 145052
  --> https://bugs.kde.org/attachment.cgi?id=145052&action=edit
how it should be

SUMMARY
Konsole reflow is broken for strings without newline

STEPS TO REPRODUCE
1.  echo -n
eyJhbGciOiJIUzI1NiJ9.eyJyb2xlcyI6W3siYXV0aG9yaXR5IjoiRElTUEFUQ0hFUiJ9XSwidXNlci1pZCI6IjYxY2MxYjkyODgwYTRlN2E5OGRmNDY2NyIsInN1YiI6ImFzZS1kZWxpdmVyeUBtYWZsbzMyMS5kZSIsImlzcyI6ImFzZTMzcHJvamVjdCIsImlhdCI6MTY0MTEzMDg1NSwiZXhwIjoxNjQxMTQ4ODU1fQ.KCUJwq8HVDFFKQjoUgzJziaDImy6yZywD_a1TccMB-8

(this jwt token does not contain production data) (first.png)
2. Press Ctrl + Left Arrow-> some characters went missing  (second.png). Notice
the last four characters are missing aswell.
3. Expand the window to the right again with the mouse -> all characters go
missing (third.png)

If you echo with trailing newline the same string and test with steps from
above again reflow works as expected.

OBSERVED RESULT
reflow swallows a bunch of chars

EXPECTED RESULT
reflow should not swallow chars


SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.2
Kernel Version: 5.15.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 3700X 8-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: AMD Radeon RX 5700 XT

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