Till and turn window jammed

[Madyin67]

Hi my bathroom till and turn window is stuck in the till position and the handel is stuck in the lock position. I'm now unable to close the window. Any help on how to fix this issue?

[Danieldib]

Are manufacturers neglecting the importance of proper drainage in PVC doors, potentially leading to long-term issues such as leaks and water damage? Is this a widespread problem in the industry, and what can be done to address it effectively?