qt6 builds of qBittorrent can cause artifacts on certain monitors

Original report here:
https://github.com/qbittorrent/qBittorrent/issues/18351

Text below is just copy-paste from that post

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I already reported conclusions about this issue for 7-Zip in this post (Russian and English versions):
https://sourceforge.net/p/sevenzip/bugs/2199/#f869

So part of text written below is just copy-paste from that post, instead of screenshots and some edits

Unfortunately, I could not find on the Internet why this happens, but I did my own "investigation"

A month ago, I bought a monitor with a screen resolution of 2560x1440 and a refresh rate of 165 Hz
I will not stretch this story, I drew test pictures, and after tests on different monitors, operating systems, video cards..., I came to the conclusion that the pattern that the selection has in the qBittorrent somehow leads to the appearance of artifacts on the monitor (they cannot be seen in the screenshots, but they can be seen in a photo or video, especially in macro-mode)
My theory is that interfaces (HDMI, DisplayPort) have a compression problem - it is difficult for them to process this pattern, and therefore they transmit it with errors
The higher the refresh rate, and the more pixels of the pattern on the screen - the more clearly these artifacts are visible

The problem only when using builds with qt6
All ok with qt5 - it uses a pattern that does not cause artifacts

The simplest solution - is to get away from using "dotted" patterns when selecting and use solid lines instead

Photos of the problem, as well as test files with patterns* are attached:
https://imgur.com/a/ZG1bMgr (qBittorrent issue)
https://imgur.com/a/h7nhYzz (7-zip issue with test files)

• Files with patterns should be opened at 1:1 scale (100% size), the size of the image viewer window can be any