Firmware 20.26 still impossible to save location

Saving a position still doesn't work with this update. Neither with the command from the shortcuts, nor from a location on the map, nor during an activity. It worked very well on the 945, but nothing to do on this one. The locations saved on the 945 do not appear once transferred to this one. And even when saving from a 265 and using Garmin share, an error message indicates that they are not supported. This has been going back since the beginning of this model. It's desperate..