erroneus "sold out" badges

Hi,

I get “sold out” badge to all products in certain product category even if there are products in stock. If I change the product to different category the badge disappears. I have not been able to figure out the circumstances when this happens to a category, but every now and then a new category get this situation and the badge.

Is there easy way to disable the badges all together, which would be acceptable workaround for me also.

Wp version is 5.0.3
Highend version is 3.5.0.1
Woocomerce is 3.5.3

Best regards,
Markku