lava cauldrons now apply fire damage even if you're not in the lava itself

when before lava cauldron would not do damage unless you touched the lava part.
see clip.
https://www.twitch.tv/raysworks/clip/ScrumptiousKindSwallowPJSalt-QL0BQxMZH7RSGPyI
PS: i looked for duplicate bug report but found none using keywords “lava cauldron”