VM keeps reporting field is required, even when it is set

[mblokdijk]

I have a default recent vm, the latest as to date:

no template overrides.

when I require an address to be filled out, and I fill out the address, VM keeps coming with the message that I have to fill out the address. I have already done so, but I can only get by this problem by not setting the field to be required.
seems like a bug.

I also created a new field, but the problem remains.

can anyone tell me what I am doing wrong??