Would it be possible in the next update to add a “lock” check box to items on the design screen so they can’t be edited or moved until it’s unlocked. Maybe also lock the whole Form as well as individual items.
I find sometimes i accidentally select the wrong item on the design screen, change the size or something then can’t remember what the original size was and have to spend ages re-building it and re-testing it on different devices sizes to get the layout back to what it needs to be.
I tried using the Lock method as you describe but I’m still able to edit the items on the design screen, the lock property didn’t seem to have any effect.