Guardian behavior issues

I made a guardian farm in my survival world and I found a couple things I believe should change (not sure if they are bugs or not but regardless need to change); Guardians resist waterflows no matter where they are even when not aggravated(they don't do that in Java), guardians try to float in lava instead of sinking (not like in Java), spawn rates for guardians are extremely low (even on hard I counted only 7, On Java there is almost an endless stream with this farm). Spawn rates are a major issue with this version of the game making building massive, time consuming,  and high drop rate farms like my guardian farm illogical because they don't produce the results due to broken mechanics and crap spawn rates that plague this game.