Front load mashing machine fail

I've never had a front load washing machine before I moved to NL. Let me say that I'm not a big fan of them. It is IMPOSSIBLE to add anything to the washing machine once the load has been started. And there is AT LEAST a 25% chance that I will miss something that needs to go into the wash (either I simply forgot or it was missed during sorting).

What can happen with a front load washing machine. (Not me, fortunately)