Bug 518055 - With Plasma Keyboard active, mouse-selecting certain kinds of text can unrecoverably delete it
Summary: With Plasma Keyboard active, mouse-selecting certain kinds of text can unreco...
Status: RESOLVED DUPLICATE of bug 516511
Alias: None
Product: Plasma Keyboard
Classification: Plasma
Component: general (other bugs)
Version First Reported In: unspecified
Platform: Flatpak Linux
: NOR critical
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
: 518003 (view as bug list)
Depends on:
Blocks:
 
Reported: 2026-03-23 18:23 UTC by Nate Graham
Modified: 2026-03-25 14:30 UTC (History)
7 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Screen recording of it happening (598.14 KB, video/webm)
2026-03-23 18:44 UTC, Nate Graham 		Details
View All Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description Nate Graham 2026-03-23 18:23:30 UTC 
STEPS TO REPRODUCE
1. Open Kate, Ctrl+N to get a new blank document.
2. Enter exactly the following text:

```
This is some introductory text: 


> this is a quote

This is not a quote
```

3. Move the mouse pointer to the left of the >, then click and drag to the right, as if to select the quoted text.


OBSERVED RESULT
The > character disappears! Undoing with Ctrl+Z does not bring back the deleted character; in fact it makes the situation worse by removing the word "this".

Marking severity as critical as this causes data loss.


EXPECTED RESULT
The text is selected without being modified.


SOFTWARE/OS VERSIONS
Git master version of Kate from KDE's nightly Flatpak repo.

OS and hardware version info, if it's relevant:
Operating System: KDE Linux 2026-03-22
KDE Plasma Version: 6.6.80
KDE Frameworks Version: 6.25.0
Qt Version: 6.10.2
Kernel Version: 6.19.8-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7840U w/ Radeon™ 780M Graphics
Memory: 17 GB of RAM (16.0 GB usable)
Graphics Processor: AMD Radeon 780M Graphics
Comment 1 Nate Graham 2026-03-23 18:44:30 UTC 
Created attachment 190940 [details]
Screen recording of it happening
Comment 2 TraceyC 2026-03-23 20:00:47 UTC 
I can reproduce on Kate 25.12.3, installed from repo
Plasma built from git-master
Comment 3 Guilherme Dias da Fonseca 2026-03-23 20:57:09 UTC 
The same bug has been reported on Fedora :
https://bugzilla.redhat.com/show_bug.cgi?id=2449945
https://bugzilla.redhat.com/show_bug.cgi?id=2441633
Comment 4 Waqar Ahmed 2026-03-24 18:27:57 UTC 
Can not reproduce.

Tried:

Kate: 26.07.70
KDE Frameworks: 6.23.0
Qt: Using 6.10.2 and built against 6.10.2

Also could not reproduce with KTextEditor-master
Comment 5 Christoph Cullmann 2026-03-24 19:19:13 UTC 
Can't trigger that either:

Kate: 25.12.3
KDE Frameworks: 6.24.0
Qt: Using 6.10.2 and built against 6.10.2
NixOS 26.05 (Yarara) (Wayland)
Build ABI: x86_64-little_endian-lp64
Kernel: linux 6.18.19
Comment 6 Nate Graham 2026-03-25 04:25:47 UTC 
I just reproduced the issue in a Plasma sticky note, which uses completely different text components.

On a hunch, I disabled Plasma Keyboard (System Settings > Keyboard > Virtual Keyboard) and the issue instantly went away. Re-enabling it makes the issue come back.

Moving the plasma-keyboard.

Basically, mouse-selecting a line of text from the left side will remove  > or - or any number it begins with.
Comment 7 Waqar Ahmed 2026-03-25 06:01:19 UTC 
*** Bug 518003 has been marked as a duplicate of this bug. ***
Comment 8 Waqar Ahmed 2026-03-25 06:04:23 UTC 

*** This bug has been marked as a duplicate of bug 516511 ***
Comment 9 Emmett Culley 2026-03-25 14:30:55 UTC 
Diabling the virtual keyboard fixed the for me as well.