Instead of absorbers automatically resetting when they are placed on a new biome/block/liquid, maybe they should just do not do anything when they already have progress with a different biome/block/liquid. I suggest that we put them into the crafting window to reset them back to 0% progress or blank them, if we want to absorb something different.

Agreed. That's a good suggestion. I will see to it in one of the upcoming versions.

Fixed in next release.