I've been spotting this issue for a very long time:
- Open your Chromium and Telegram-desktop apps
- Right click on any image in your browser and click "Copy image"
- Try to paste that image in Telegram-desktop to any of your contacts
Surprisingly, mostly it won't paste it right away, but after being persistent and trying various combinations of "CTRL+V" and/or right-click "Paste" you will succeed after certain amount of tries! Quite weird issue, don't you think? How to debug/fix this?