The answer to 'pipe repair overflowing' is that a pipe repair that is overflowing is likely due to a clog or blockage in the pipe. This can be caused by buildup of debris, hair, or other materials in the pipe, or a more serious issue like a broken or damaged pipe. Symptoms include water backing up and overflowing from drains, sinks, or toilets.
If you have a pipe repair that is overflowing, the first step is to try to clear the clog or blockage. This can often be done with a plunger or a drain snake/auger. However, if the issue persists or you are unable to clear the blockage, it's best to call a professional plumber. They can diagnose the root cause and make the necessary repairs to stop the overflow.