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https://issues.apache.org/jira/browse/GUACAMOLE-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17852864#comment-17852864
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Corentin Soriano commented on GUACAMOLE-1256:
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It seems that there are several different behaviors:
* Page up / page down = no problem
* Down arrow = no problem
* Up arrow = problem when visible_cursor_row != 1
** The row above the cursor is copied to the cursor row.
** The content is not "damaged" in the buffer. The clipboard contains the real
lines and not what is displayed if I select text.
!image-2024-06-06-18-13-06-244.png!
We can force the redrawing of the content on the screen with
__guac_terminal_redraw_rect but I think this is not the right approach.
For nano I'm not sure the problem is exactly the same: the scroll should be
managed by nano and not by guacamole.
Mixing the use of down arrow and page up causes the text to be mixed visually
but also in the buffer :
!image-2024-06-06-18-33-37-578.png!
> Lines of file gets broken when navigating back and forth using a text editor
> ----------------------------------------------------------------------------
>
> Key: GUACAMOLE-1256
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1256
> Project: Guacamole
> Issue Type: Bug
> Components: Terminal
> Affects Versions: 1.2.0
> Environment: Distributor ID:Ubuntu
> Description:Ubuntu 18.04.2 LTS
> Release:18.04
> Codename:bionic
> Linux dev-kubernetes-01 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52
> UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Hugaleno Bezerra
> Priority: Minor
> Attachments: Screenshot from 2023-10-10 13-39-18.png, Screenshot from
> 2023-10-10 13-41-00.png, bug_scrollingback_onfile.gif,
> image-2024-06-06-18-13-06-244.png, image-2024-06-06-18-33-37-578.png
>
>
> Protocol: SSH
> When editing a file using a text editor like vim and navigating back and
> forth in the file some lines get "broken".
> The file being used in the gif below is a default file from ubuntu
> installation "vim /etc/ltrace.conf"
> The problem happens in some servers of our local network, while in anothers
> with same SO it doens't. We tried find a step to step to reproduce the
> problem with 100% accurate but unfortunately we couldn't.
> We decide to share that to see if someone else is having the same problem and
> could help to find the reason.
> If you need any more information to help reproduce de problem pls let me know.
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