Reply To: Issue with Filter widget.

Hello,

Please install the free Classic widget plugin if you have not done that yet.

Then try to regenerate “Regenerate the product attributes lookup table” in Woocommerce > Status > Tools: https://take.ms/LGpvf

In addition, please check Woocommerce > Settings > Product tab > Advanced tab and disable Use the product attributes lookup table for catalog filtering.

Best Regards