Well tip stalling -whatever THAT is - is a description which has a bunch of explanations
Many of em wrong and oft repeated
But let's stick to your particular model The EDGE 540
The model is shaped to give the full routine of areobatics
The wing planform is excellent for this
IF your model is perfectly straight and perfectly trimmed and ideally balanced - it will still - if held off on landing- drop like a rock if speed drops too far.
If you have some rudder in it at slow speeds , it can easily drop a wing- again- that's normal.
I have built and assembled very similar models of the EDGE
Is not to fear tho - just practice flying it to the ground - don't chop the throttle n hope for the best
It can and will land very nicely

Overly harsh application of elevator will snap the model at some speeds - The design should do that .
Really