The Telegram Web Z version that was just recently released contains "Sign in to Telegram" (image) instead of a standard text. This uses unnecessary bandwidth and also renders custom user CSS styles and extensions like Dark Reader unusable since there is no way I am going to lose my eyesight because of this 20px image of just a normal text. It also poses unwanted security risks since images may be loaded externally. It also breaks scaling on various screen sizes and breaks as the user scales the window with either zoom, custom text size or other accessibility controls.
A "fix" would be to literally just write "Sign in to Telegram" with normal text" and don't use an image.
Go to "https://webz.telegram.org/" and you become blind in a matter of miliseconds. Luckily I had glasses on when I opened the webpage so I was able to warn people before more damage has been done.
Windows 10. Current WebZ release.