Bug 2279809

Summary: Screen damage in gvim when resizing
Product: [Fedora] Fedora Reporter: Pete Zaitcev <zaitcev>
Component: vimAssignee: Zdenek Dohnal <zdohnal>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 40CC: carl, gchamoul, zdohnal
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2024-05-14 10:41:08 UTC Type: ---
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Description Flags
As seen by human or camera
none
As captured by the screen capture none

Description Pete Zaitcev 2024-05-09 00:42:26 UTC 
The problem is evidently between gvim (vim-X11), GTK, and Wayland. I cannot
be sure where it is. Setting component to "vim", because no other applicaon
appears to suffer from this.

The symptom is this: if I resize the gvim window, it acquires a permanent
damage, which application level refresh does not cure. Usually the damage
corresponds to vertical lines where the window decorations were when
resizing. In the attached screencal, I used a selection on purpose in order
to identify the problem.



Reproducible: Always

Steps to Reproduce:
1. run gvim
2. resize
3. observe permanent damage to the canvas

Actual Results:  
Text in editor is unreadable.

Expected Results:  
Text is readable as before, in F38.

The problem is actually a regression in F39. I hoped the F40 would fix it,
but it didn't. Still happens.

Observe that the system screenshot function saves the damage as "transparency".
I attach 2 screenshot: with a camera (as I see it) and with system capture.

vim-X11-9.1.354-1.fc40.x86_64
Comment 1 Pete Zaitcev 2024-05-09 00:43:35 UTC 
Created attachment 2032257 [details]
As seen by human or camera
Comment 2 Pete Zaitcev 2024-05-09 00:44:31 UTC 
Created attachment 2032258 [details]
As captured by the screen capture
Comment 3 Zdenek Dohnal 2024-05-13 12:43:42 UTC 
Hi Pete,

I'm sorry, I was not able to see the screen issues in GVim which you mentioned - neither with my vimrc or without any vimrc or plugins.

I have Fedora 40 Gnome with Wayland, resized the window by mouse and didn't get the issue.

Is there another way how to resize Gvim window? Or can you share the file you made screenshot on, so I could try to look into those specific lines?
Comment 4 Pete Zaitcev 2024-05-14 03:00:10 UTC 
The file does not matter. But the system has to do something for this
to crop up. Just now when I received a NEEDINFO from Bugzilla, there
was no problem for me either. I opened a few windows, resized them,
and nothing. So I started OpenSCAD, browsed YouTube, and then it
appeared.

One other thing, the resize has to be somewhat brisk. It will not
appear if I drag the decoration slowly.
Comment 5 Zdenek Dohnal 2024-05-14 10:41:08 UTC 
Do let me know if you have steps which trigger the issue every time, ideally in clean VM.

Otherwise I'm not able to do much about it, sorry.

Closing for now, we can reopen once there are the steps which trigger the issue every time.