Camera only reflection

At night when I close my drapes, I only get a reflection of the camera. Why? Just starting doing it. I even switched camera locations.

Looking through glass with IR on will do that, also if the drapes reflect enough light from outside sources the same can happen.

What is IR

Night vision infrared

If not that then light reflecting off curtain backing

This V3 has it’s face sitting directly on a double pain window behind blinds, no window mount. The light on the top left is a streetlight.