I set up an igneous extruder and associated crafting support: two fluid satellite pipes, a crafting pipe, two fluid crafting modules, and an advanced satellite module. A request to the crafting pipe larger than available liquid storage in the machine buffered liquid in the fluid satellite pipes. The buffered portion did not fully drain into the machine when space became available, the lower section remained. Even after logging back in, that portion was still stuck although the crafting pipe was still able to process smaller jobs.

This is how it looked when stuck.

Breaking the neighboring pipe flushed the buffered portion into the machine.

Breaking a pipe further away did not have an effect.