Once not working with Throttle

When I use both options at the same time the Once option does not work. Is this normal behavior? Each separately works very well.

v-observe-visibility="{
   callback: visibilityChanged,
   throttle: 300,
   once: true
}"

[nicholaszuccarelli]

Same issue for me too.

@nicholaszuccarelli You try to use a different key attr on each element using the once? key="a"
key="b"