snares on the ground, logically, should not be able to stop jumps mid-air.

annie and brand should be immune to ignite but that's not happening either

Just saying this game is 2D isonometric not 3D, and has no Z axis so thoose "jumps" are techniqally not jumps but strangely drawn dashes hence you'll get hit by everything if you aim 0.5 cm "higher".

With that kind of logic:

champions without a circulatory system/biological parts shouldn't be poisoned. Blitz please, don't do the Claptrap thing where you're programmed to think you're hurt by poison.

Towers should be damaged by explosive magics rather than being immune, and arrows should be completely ineffective vs structures made of solid stone.

champions should only be able to shoot/throw as many arrows/bolts/bullets/darts/cogs they can carry rather than having infinite ammo.

Nami should flop around on the ground rather than swim through the air.

Caitlyn should be able to shoot the entire range of the map with a sniper rifle rather than a shorter distance a fat guy can chunk barrels.

Causing a gout of flames to erupt from the ground should incinerate all the brush and trees nearby rather than leaving them unscathed. Ditto for demonic bears, thunderbolts, and explosives.

Swords shouldn't increase gun/bow damage, and bows shouldn't improve sword/dagger damage.

LoL is one of those games where Gameplay is just much more important than Lore, to the point a lot of logical things just don't pan out.