This is an AWESOME new feature that many of us requested! Thank you to whoever got this implemented.
If you lock an element on the editor, all it’s children will now lock as well. So you can quickly lock all elements on the page with a few clicks. Beforehand we would’ve had to click every element independently, which is simply not realistic.
No more accidentally dragging elements out of their parent group and causing havoc on the page!
I don’t even consider this a QOL improvement. It stops us from accidentally causing critical bugs - not noticing that an element was moved out of place can be a nightmare if it does not cause issues on the issue tracker.