FS#77540 - [telegram-desktop] Broken UI Scaling on KDE Plasma

Attached to Project: Community Packages
Opened by Paulo Marcos (Myghi63) - Thursday, 16 February 2023, 04:28 GMT
Last edited by Antonio Rojas (arojas) - Saturday, 02 September 2023, 08:29 GMT
Task Type Bug Report
Category Packages
Status Closed
Assigned To Sven-Hendrik Haase (Svenstaro)
Felix Yan (felixonmars)
Jiachen Yang (farseerfc)
Architecture All
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
Setting the DE to 150% global scaling, telegram-desktop by itself increases it's size to match 150%, but KDE Plasma also increases it's size to "match" 150%, resulting in a window that is way too big and pixelated. The official binary from desktop.telegram.org does not suffer from this problem and the DE won't interfere on it.
Setting up telegram's built-in scaling to 100%, telegram still resizes it's window and it's big enough, but yet too much pixelated.

Additional info:
* package version(s)
telegram-desktop 4.6.2-2
plasma-desktop 5.26.5-1

* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:
Launch KDE Plasma, set global screen scaling to anything above 100% (like 150%), reboot, launch telegram-desktop from arch's official repository.
   telegram-desktop.png (362.8 KiB)
   from website.png (218.1 KiB)
This task depends upon

Closed by  Antonio Rojas (arojas)
Saturday, 02 September 2023, 08:29 GMT
Reason for closing:  Upstream
Comment by Vladislav (Petrovich1488) - Tuesday, 21 March 2023, 15:56 GMT
Can confirm.
2880x1800 resolution
KDE scaling set to 125%
Telegram scaling set to 155%

Official static binary doesn't suffer from invalid scaling
While the one in the package do
Comment by Antonio Rojas (arojas) - Saturday, 02 September 2023, 08:29 GMT
Please report this to KDE. The official binary isn't affected simply because it uses its own bundled Qt which does not pick up system installled plugins.

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