artefacts between Italy and Austria

[AnthillSudoku]

description

freemap shows some artefacts near the border between Italy and Austria. From Brennero going west to Piz Jeramias you can see a whitish "band", OSM map looks fine and I found nothing about it in OSM data.

https://www.freemap.sk/#map=14/46.997700/11.503286

https://www.freemap.sk/#map=18/46.847880/10.140874

screenshot with the brighter zone