Can't save project

Hi im on last update 0.20.4 SDK and 1.29.28.0

Can’t save projects in SDK, the option (control S) is grayed. I have to close, then it gives me the option to save.

Do you know why ?

Thanks

The save option in project editor is gray when nothing new to save in the PROJECT structure
Most likely you want to save progress in the SCENERY editor