Wrong scaling of popups in KDE (kubuntu 24.04) when fractional/HiDPI scaling is ebabled

[giox069]

Steps to reproduce

Configure 150% screen scaling (fractional scaling) in Kubuntu 24.04 desktop. Install Telegram, run it, open a chat and right click on a message with your right mouse button. The context menu and reaction chooser will popup. Scaling of popups will not be 150% but 200% or more, and popped up menu are cut and not useable.

Expected behaviour

Popup menu should scale to the KDE desktop scaling setting (150% in my case)

Actual behaviour

Popups are scaling more than 150% (200% ?), and it's impossible to use the menu and reaction chooser

Operating system

Kubuntu 24.04

Version of Telegram Desktop

5.5.5

Installation source

Static binary from official website

Crash ID

No response

Logs

No response

[ilya-fedin]

KDE 5 is bugged regarding fractional scaling, it just won't work properly until you update to KDE 6.