I had a very good handyman replace the two bulbs in my outside
electric eye fixture. The
bulbs work, but they do not "obey" the sensor. Handyman covered the
eye properly to test, but the bulbs did not go out. He cleaned up
around the sensor. Still no luck.

Backstory: This light was installed quite a while ago. It worked
fine (on at night, off at dawn) for years. Then it began to act up.
The lights barely lit up. Just a very faint, dim glow. BUT the
sensor was working!

So why, with fresh new bulbs properly installed, does the sensor not
work?

Any advice appreciated.