Hi, I am having the same issue for our wesite thestrawberrythief.com.au. I have just narrowed it down to a plugin conflict with PDF Invoices & Packing Slips.
It’s very weird and the issue only occurs when we are in the orders page and select ‘processing orders’ and filter by order type ‘non-subscription’. The resulting order list is out of date sequence and when we try to click to order by date or by order number nothing happens.
The warehouse staff tell me it started happening around the time of the last plugin update (end of Jan).
Today I created a staging site and deactivated all plugins, then reactivated each of them one at a time and it seems PDF Invoices & Packing Slips is causing the conflict. When I deactivate the plugin the problem doesn’t exist. When I activate it again it does exist.
Do you have any thoughts on how we might resolve this?
Many thanks,
Tanya