I found a problem recently in my magento 22.214.171.124:
If I shop as a guest, proceed to checkout from shopping cart page, no problem - I can then login from there and continue.
But I logged in from very beginning, go to shopping cart and directly click “checkout”, also no problem - NOTE I didn’t select estimate shipping or update total with the shipping/tax on the cart page.
If I’m logged in from beginning, and updated total after get shipping quote; OR if I login at checkout page, then go back to shopping cart page and edit something there (now the shipping option is already selected”, click on check out again, “.../checkout/onepage/” page just went blank.
Anybody else had this problem?