When a player in Arma 3 on any server including the Editor steps 1 toe into the water, face wear worn by the player disappears, it reappears as soon as player exits the water.
There is no config option to disable that behaviour. Amount of mods that use facewear slot for various gear is huge, and yet all those mods struggle with that "feature".
There is a config option for cfgglasses called "mode=".
"mode=1" makes facewear to behave like underwater glasses, so that it appears in water but disappears when on land.
There is no other option that would enable facewear to be shown both on land and in water. This design "feature" breaks all facewear gear mods.
Please make it so that mode=0 or mode=-1 disables that "feature".