I have a Hunter ceiling fan in my dinette with a Hunter 22787-A remote
control unit installed. I bought the house two years ago with these
installed.

The remote had been working fine with the fan and the light from the
time I bought the house until this past Spring.

Then I started noticing that whenever I turn the fan on, the light
would flash on briefly (assuming the light is switched off) and making
a buzzing noise while it flashed on.

Any ideas what's causing this? Is the remote going bad?