Windshields are designed to be strong but not indestructible; avoid putting undue pressure on them by leaning against

https://super-wiki.win/index.php/Best_Practices_for_Maintaining_Your_Newly_Replaced_Windscreen

Windshields are designed to be strong but not indestructible; avoid putting undue pressure on them by leaning against them when entering or exiting the vehicle to prevent cracks.