When placing two normal slab furnaces on top of each other, when they are extracted with a pick they disappear and a transparent block remains. I do not know if it happens with other ovens or work tables.

Could you post the console log so I can see if an error has occurred. Also which mod are you using for the slab furnaces?

Sorry for not answering yet, I've been working and haven't had much time. As soon as I can I pass the error. Thanks in advance.

That's fine. Take all the time you need

Please check this is still an issue in the latest version when you can :D

Go go go 👏👏 works perfect, I see that apart from fixing that, it no longer crashes and has also corrected the position of the slabs. Congratulations, good work. Now I just need to find the rest, heh.

You only have to change the .zip to .rar, since .rar is not supported. It is a video where what happens is shown, there is also an error when mining iron and gold, certain spikes do not extract anything, they just disappear, although I do not know how to discover which mod is causing this, I do not think this is it. Regards.

Here I send a video and the crash report file

Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part01.zip
Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part02.zip
Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part03.zip
Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part04.zip
Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part05.zip
Minecraft_ 1.15.2 - Un jugador 2020-06-07 13-06-43.part06.zip
crash-2020-06-07_13.08.01-client.txt