@Shopify If you don't fix this I'll be forced to switch to Squarespace. I CAN'T CHANGE OR SEE ANYTHING ANYMORE. CAN'T SEE THE CUSTOMERS, SALES ETC

This is happening to me as well. Extremely annoying.In my case it isn't once a day, but every time I click a menu item in the admin panel. Completely unusable. I removed cookies/localstorage etc, doesn't make a difference.