Is this a bug or is it intended?

Can't reproduce, it doesn't happen for me.
What are you crafting them in?

Both regular and Tinkers tables. I do have several other mods installed.

Could you try with just AA?
If that works, could you try adding mods until it "breaks"?
I know this is a somewhat lengthy process but it would make it reproducable and helps getting it fixed.

Okay, conflict is definitely a mod called Calculator. Honestly haven't used it, so it's not a huge issue for me, and if I had to guess I'd say the problem is on that end (since it seems to use a new crafting mechanic). But if you want to look into it for your own peace of mind, be my guest.

I've checked for updates in the last week or so, so it should be up-to-date. It is not an issue with SonarCore installed, only when Calculator is also added in.

It probably just removes the container item of the bucket for some reason.
This is not an issue on my side then.

@Rudy2D2 what version of calculator and sonarcore you using? i know this has been fixed before so eighter your version is outdated or it's a regression

cc @SonarSonic