Description

I gave been playing on 1.5.1f to keep my drill bores alive. Upon updating to 1.5.1i I immediately took to the nether to test that my machine still works. As soon as my deployers hit a lava pool the machine failed to replace the pool and broke the minecart. I did not test with water in the overworld as I instead have just went back to 1.5.1f

I do play with an intensive 180 mods custom pack that I put together but I assume that I can rule out this being any sort of outside impact from other mods as the only change I make for the machine to work is rolling the create version back.

Game Log

https://mclo.gs/ZrqsDav

Debug Information

No response

Cannot reproduce, they place blocks in lava just fine, likely a issue with the design of your miner