Hi Tacx, you highlighted actually a good point and I'm sure there are many out there that had their question answered.

It depends mostly on the plane design, quality of the kit and how well (accurate) it was build. Flying wings (i.e. Horten etc) can be notorious for tip stalls. To offset that we add "washout". My Horten III have 10 deg washout. The idea being to have the wingtip leading edge point slightly down (angle) so the angle of attack is less, thus it wont stall before the main wing stalls.
My Miss Liberty Sport (Aerobatic Bipe) have 1.5 deg on the bottom wing to help with tip stall.

Aerobatic/fighter planes are designed to be inherently unstable in order to be manouvreable.

But normally it is all sorted out in good quality kits and you don't have to worry about it - some cheap Asian "copy" kits can be real dogs to fly and impossible to fix.

Enjoy practical hands on flying and don't break your head with too much aerodynamic theory worries and scares........ it's dark science and there are many theorists....

Sometimes Terra Firma does jump up and slaps a plane out of the air for no reason at all..

Enjoy your flying