Hey there, @itsmefti! Thanks for contacting us. I’m happy to help you.
I noticed it happens when I update stock I bulk via CSV.
Does it happen every time you do this?
Are you using the default WooCommerce importer or a plugin to import the CSV file?
Do you have any custom code or plugin that affects the shop page or products?
Does it only happen on the shop page or other pages such as categories too?
Furthermore, I’d like to understand your site properly. Please share with us the necessary information below for us to investigate the issue further:
System Status Report which you can find via WooCommerce > Status > Get system report > Copy for support.
Fatal error logs (if any) under WooCommerce > Status > Logs. Then you can use the selector to search for Fatal Errors.
You could copy and paste your reply here or paste it via https://gist.github.com/ and send the link here.
Looking forward to your reply.
Have a wonderful day!