Yes, and it's REALLY annoying. I have a very old Lupine Tesla that interferes with wireless computers, but since it was made before the latter became really popular I wasn't too surprised. However, I was quite disappointed when a brand new NiteRider Lumia 750 also interfered with it. In the end I replaced the wireless computer with a Cateye wired one.

Interestingly coded computers don't seem to suffer from this problem. My Garmin Edge, for example, continued to pick up the signal from the cadence/speed sensor regardless even though it was mounted much further away.