In my website i use as sidebar the product categories widget.
So far everything works great.
The “issue” came when i click the dropdown option on widget.
After that, every time I click on category it add this at the end of the url:
?product_cat=belotero
This happens only if i click the dropdown option.
Yes, my mistake.
In a clean WordPress website the widget works the same.
So, i guess a plugin cause this issue.
My initial problems was because i have a lot of categories in my website.
And because of this, the product description was far too low.
For example here: xxx
Take a look in the image and product price and product description.
There is a lot of space.
In the next theme update, we will introduce a product page layout with full height sidebar. It may fix this issue. Otherwise, you will need to remove this widget from the product page.