There are photos with this post.
Have others had this problem?
Asking for advice, comments, possible DIY fix.
I have a 2017 320S. The plastic hinge piece on the front window has cracked and doesn't hold the window in securely anymore. I am told I need a whole new window as a replacement plastic piece is not available. Perhaps someone sells a replacement hinge(I've seen the galley hinge sold).
Please review the photos and offer any suggestions or input.

Comments
2017 T@B 320 Max S
2014 Ford Escape 2.0 EcoBoost
2017 T@B 320 Max S
2014 Ford Escape 2.0 EcoBoost
https://tab-rv.vanillacommunity.com/discussion/19631/replacing-2021-320-front-window-with-new-version#latest
Also, this company has been mentioned previously as a possible source for parts, so you might consider contacting them for suggestions:
https://transatlanticprod.com/products/
(Alde: 3020; Refrig: Isotherm Cruise 65 Eleg; Battery: BB 100Ah LiFePO4; Solar: Renogy 220W Portable Suitcase w/ Victron SmartSolar MPPT 75/15 Controller; Victron BMV-712 Battery Monitor w/ Shunt; Pwr Cntr: PD-4135KW2B; EMS: PI-HW30C)
Greg & Marlene (Tucson, AZ)