Bug 437424

Summary: "Floating letters" when using present windows with Kmail among windows
Product: [Applications] kmail2 Reporter: Emanuele Spirito <emaster987>
Component: composerAssignee: kdepim bugs <pim-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: emaster987, kitt997, montel, nate
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Floating letters above the Kmail windows while using Present windows

Description Emanuele Spirito 2021-05-20 16:47:09 UTC 
SUMMARY
When I open kmail and other windows, it sometimes occurs that above the kmail windows I see some capital letters (in a number starting from 2 and going to 20), every one in a box, placed over the kmail preview section of the window. This letters disappear if I either use present window and then come back to the kmail windows or change the email I see in the preview (I click on another email above). 

STEPS TO REPRODUCE
1. Open Kmail and other windows.
2. Open in preview one mail in Kmail.
3. Use present windows to change from one window to another.

OBSERVED RESULT
Letters sometimes appear. 

EXPECTED RESULT
Letters do not appear.

SOFTWARE/OS VERSIONS
Operating System: Fedora 34
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Kernel Version: 5.11.20-300.fc34.x86_64
OS Type: 64-bit
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-1065G7 CPU @ 1.30GHz
Memory: 7.5 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Plus Graphics

ADDITIONAL INFORMATION
I use to open and close kmail also from the taskbar at the bottom right of the screen. This may interfere with the previous Step to reproduce the bug. 
I noticed that the capital letters are usually some capital written in the context section of the email preview.
Comment 1 Emanuele Spirito 2021-05-20 16:47:43 UTC 
Created attachment 138621 [details]
Floating letters above the Kmail windows while using Present windows
Comment 2 Nate Graham 2021-05-20 17:52:18 UTC 
wat
Comment 3 Laurent Montel 2021-05-21 04:44:05 UTC 
kmail->configure->apparence->general->"enable access key"
Comment 4 Emanuele Spirito 2021-05-21 05:19:16 UTC 
(In reply to Laurent Montel from comment #3)
> kmail->configure->apparence->general->"enable access key"

It is enabled, should I disable it?
Comment 5 Laurent Montel 2021-05-21 05:51:59 UTC 
(In reply to Emanuele Spirito from comment #4)
> (In reply to Laurent Montel from comment #3)
> > kmail->configure->apparence->general->"enable access key"
> 
> It is enabled, should I disable it?

yep
Comment 6 Emanuele Spirito 2021-05-22 06:50:57 UTC 
(In reply to Laurent Montel from comment #5)
> (In reply to Emanuele Spirito from comment #4)
> > (In reply to Laurent Montel from comment #3)
> > > kmail->configure->apparence->general->"enable access key"
> > 
> > It is enabled, should I disable it?
> 
> yep

Since now it is fixed after having done what you said and I believe it won't stop working. 
Thanks you all