Yes. Unfortunately not unusual for me with "worn rigs" once they get heavily used and wiring and connectors get stressed. Things often "settle down" and the noise goes away entirely if not moving around a lot during the performance. But it's even more annoying when it pops up again later during recording.
It's indication for me that its time to check and clean at the very least, if not entirely re-work the rig. Easy enough to clean the connectors, and tape or otherwise secure them from excess stress and movement. I've sometimes gotten by prior to the more invasive things like re-soldering connectors and replacing wires when I was able to isolate the problem by listening with headphones while jiggling and prodding, then carefully securing and protecting the problem area once confirming that clean signal was achieved and could be maintained, but that's always something of a gamble.