1.18.0 - Enable Sandboxed Elevation Service (Chrome, Edge, Brave, etc...) works my side. Brave, Edge, Chrome profile was okay after running Chromium based browser internal updater. I maintain Chromium based browser Services at Manual. Before calling browser update. I'll turn on Enable Sandboxed Elevation Service and turn off Enable all security enhancements (make security hardened box). After confirming browser profile survives update and before calling browser discrete sandbox. I'll turn off Enable Sandboxed Elevation Service and turn on Enable all security enhancements.
as always, your mileage may vary