qlimaxmito

Windows like that one have an invisible, bullet-proof lip on the inside, which is easy to hit by accident when trying to shot through at an angle or by standing too close: https://www.youtube.com/watch?v=rNHDtnwDn9A
https://www.youtube.com/watch?v=CKrIFUN1xMw

Paging /u/kenturrac.

Will check it once I am back from vacation. Thx for reporting!