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https://issues.apache.org/jira/browse/GUACAMOLE-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17350199#comment-17350199
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Mototsugu Emori edited comment on GUACAMOLE-1351 at 5/25/21, 1:38 AM:
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[~mjumper] 
When switching to the resolution 1366x768, 
 users see the margins of the background color on the both sides of the screen.
 They are not seen on other resolutions.
 So we were asked why.


was (Author: emori):
When switching to the resolution 1366x768, 
users see the margins of the background color on the both sides of the screen.
They are not seen on other resolutions.
So we were asked why.

> Provide option to disable rounding of RDP screen widths
> -------------------------------------------------------
>
>                 Key: GUACAMOLE-1351
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-1351
>             Project: Guacamole
>          Issue Type: Improvement
>          Components: RDP
>            Reporter: Mototsugu Emori
>            Priority: Trivial
>         Attachments: rendering_issue_on_specific_widths.png
>
>
> There are margins on the left and right of the rendered screen on widths 
> other than the multiple of 4.
> When using old Windows (WindowsXP, Windows Server 2003), the screen corrupts 
> on widths other than the multiple of 4.
> New Windows (Windows8, Windows10) do not have such a issue.
> However, there are margins, even when using new Windows.
> [Cause]
> In GUAC-256, the width of the screen is always rounded down to the nearest 
> multiple of 4.
> The fix is applied to all Windows.



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