Click on customise toolbar and wait for the menu to open. After this, open Mission Control and all windows, even windows not of Orion, vanish in Mission Control. They are present in Expose tho.
All windows should not vanish when in Mission Control.
Orion Version 0.99.134-beta (WebKit 622.1.9.19.2) Build date June 10, 2025 Mac 15.5 (Build 24F74)
Sequoia (15)