tntexplodes = false doesn't work in 1.16 beta

In the beta, I'm on Win 10 playing w/ someone on android, in the beta, I set tntexplodes to false using /gamerule tntexplodes false and the output in the chat sat tntexplodes has been updated to false, and then i summon tnt, it explodes (as expected) but destroys the surrounding area, which it should not