backand dropdown lists are not active

Hello everyone
I hope someone can tell me the solution.
Some dropdown lists are not active on the Woocommerce backend. I can’t say for sure at what exact moment it happened, but two months ago everything was working properly. Actually the problem looks like this:

1. On the “Edit order” page in “General” I can change the date, but I can’t change “Status:” and “Customer:”. The “Status:” dropdown list seems to be inactive and does not even open. But I can change the order status on the Woocommerce -> Orders page.
2. On the Woocommerce -> Orders page, the “Filter by registered customer” dropdown list is inactive, its text is light gray and it also does not even open.
3. On the “Products” page, the “Filter by category” dropdown list is also inactive and does not expand. The other filters work fine and “Bulk actions” works fine too.
4. On the Woocommerce -> Settings -> General page, dropdown lists do not open and it is not possible to change “Country / State”, “Selling location(s)”, “Shipping location(s)”, “Default customer location”, “Currency”, “Currency position”.
5. On the Woocommerce -> Settings -> Products page, dropdown lists do not open and it is not possible to change “Shop page”, “Weight unit”, “Dimensions unit”.
And some more dropdown lists on the Woocommerce backend. Actually, the problem is only with the dropdown.

The WordPress version, all plugins, and the Flatsome theme are updated. PHP version: 8.0.12.
I disabled all plugins one by one and checked the functionality of the dropdown lists, but the result is unchanged. I also put a standard theme, it didn’t help either. Changed the PHP version – it didn’t help. I installed different versions of Woocommerce – it didn’t help either.
In WordPress itself and other plugins, dropdown lists work properly, the problem is only with Woocommerce.
Can anyone tell me what can be the reason of this problem?

• This topic was modified 2 years, 7 months ago by piletskiy1.