[Bug 840972] [NEW] display of selection and content of selection garbled

[Martin Weis]

Public bug reported:

This bug affects multiple KDE editors (at least kwrite+kile), so it may be a libktexteditor4 issue.
Sometimes text is displayed in a garbled manner, expecially after/during selection/copy/paste. Text lines can be shown in the wrong line (content on screen overwritten), text display changes in lines not currently edited . Rerendering shows, that the original content may not be changed. Other times selection does not work properly and sometimes even text gets changed in a fairly randomly manner (using parts of the selection), selection boxes can appear all over the display area.

To reproduce a selection problem I encountered:
* kwrite bugfile # (attached)
* make a selection direction backwards (e.g. line 20 to 18), 
* press ctrl-shift-up to select the previous lines (17,16,...)
* added selected lines get added at end of selection (after line 20), so line ordering is 16,18-20,17,21

[screenshots added for this particular problem]

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: kwrite 4:4.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: openafs
Architecture: amd64
Date: Sun Sep  4 14:22:54 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: kdebase
UpgradeStatus: Upgraded to natty on 2011-05-22 (104 days ago)

** Affects: kdebase (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty

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Title:
  display of selection and content of selection garbled

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