I've been having several issues with the internal tank filling and getting stuck full, where it won't drain, nor will the pump operate. This happens for example with betweenlands swamp water and ender io pressurized fluid conduits. It will usually work for a brief time and then cease to operate shortly thereafter. Breaking and replacing the pump sometimes works but usually not (usually it still refuses to drain, fills the internal tank again, and then ceases functioning again). Nothing turns up in the log to provide.

• There is not another fluid in the conduit preventing draining. In the above example stagnant water (which sometimes pumps in place of swamp water) is properly voided, and it still does not pump.
• Seems to place fluid into tanks properly, but not conduits, pipes, and other non-tank fluid transport blocks.

I can't reproduce this.