Hi Rafal,
I am Sumit here to assist you with this question.
This is from a utility called Lenovo utility. Uninstall it in the Apps section which should resolve the issue, provided turning off Toggle keys hasn’t helped.
https://www.reddit.com/r/Lenovo/comments/go5d5e...
Disclaimer:
The link included is a non-Microsoft website that would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.