Input value doesn't display. How is that possible?

Question

This must be something utterly stupid that I\'ve done or am doing, but I have an input with a value attribute that simply isn\'t being displayed:

Answer 1

Same problem occured on electron:

I was clearing the field with document.getElementById('_name').value = '' instead of document.getElementById('_name').setAttribute('value', "").

So I guess simple quote broke the field or input has a second value hidden attribute because I could rewrite on the fields and it won't change the value on the inspector