Discussed in discord.
Currently, if a Rocket Miner is set with a fluid scanner and it runs out of Empty Cells, but still has EU and inventory space, it will continuously enter a cycle of:
Attempting to mine towards fluids > Cannot mine fluids due to no Empty Cells so it enters Stuck on Block state, retracting Mining Pipe to fly elsewhere > Land in new spot > Attempt to mine towards fluids

What should be the behavior is that if it detects that it has no Cells left while using the Fluid/Filtered Fluid Scanner, it should immediately go back to its Refueling location.