While trying this out with a friend, we ran into an issue where my friend would lose all their block at the end of their turn. This happened when either them or myself hosted, and it didn't matter who went first, or what characters we were playing.

I would be able to keep my block until the start of my next turn, but they always lost their block after ending their turn making it impossible for them to defend.

We made sure we were both running all the same versions of the mods. We only had basemod, stslib, and PvP enabled.

There was no network issues (ping was very low, ~30 to 40)

any idea what could cause this?