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https://issues.apache.org/jira/browse/GUACAMOLE-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17956744#comment-17956744
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Eugen Hartmann commented on GUACAMOLE-1256:
-------------------------------------------
The accepted workaround affects scrolling to both directions. That is an
overhead because
* The main reason to introduce that patch was scrolling to the beginning of
texts. The other scrolling issues either were fixed by [GUACAMOLE-1256: Fix a
display issue when scrolling up in vi as well as latency in less.
#565|https://github.com/apache/guacamole-server/pull/565] or were insignificant.
* Like it was before [GUACAMOLE-1256: Fix latency when dumping big text file.
#554|https://github.com/apache/guacamole-server/pull/554] users will complain
about significant performance degradation when dumping big texts files. Tested!
Also see complains in this thread above.
I suggest to apply the workaround only for the case when you scroll to the
beginning of texts. In most cases it is done manually via the ARROW UP key
where performance degradation is not so visible.
https://github.com/apache/guacamole-server/pull/598
> 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
> Fix For: 1.6.0
>
> Attachments: 20241022105248.png, 20241022105302.png,
> 20241023174511.png, 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, test.conf
>
>
> 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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