The changes made in 8a192ad cause the window to have an incorrect offset on some monitors depending on their resolution. <img width="2560" height="1440" alt="Window centered correctly on larger monitor" src="https://github.com/user-attachments/assets/331760dc-a8fa-42e4-97d8-bee3e3695d24" /> <img width="1920" height="1080" alt="Window offset to the right on smaller monitor" src="https://github.com/user-attachments/assets/b2770730-7d7c-48ce-8d26-e6ba3f715932" /> Tested on labwc 0.9.1