HELP! 5.3 added some unwanted feature that kills my Lyra character when dropping down to a lower level. how to disable this new unwanted feature?

i can’t track down what’s killing my lyra character when it falls… (^&(&^%(&!!! arghhhhh… i never should have upgraded.

[Update] Shooter Gym - used teleport to attempt to translate character to lower level and the lyra charcters die as soon as the exit the teleporter. booooooooo. this is on a brand new, clean Lyra setup using Unreal Engine 5.3 latest.