Furnace output from Turtle not working correctly

[tckelly6397]

Minecraft Version

1.18.x

Version

1.100.8

Details

When using a turtle and executing suckUp() from the bottom of a furnace the output item isn't initially retrieved. It will instead first remove the input, then the fuel then then output.

[Zelaux]

I have the same issue in 1.101.2-1.19.2

I guess mistake is here(ignoring side)