Just 'cos other people suffer from it, doesn't mean you should accept it.
Personally, I'd class it as a fault & start hassling EBuyer for a refund.
28 days return policy is BS & irrelevant when it comes to goods which are faulty / not fit for purpose etc - have a read up on the Sale of Goods Act e.g.
HERE.
This is why, especially for something like an HD Ready LCD, you really do get what you pay for. I'd rather have a smaller panel by a decent brand, than get a huge noname one for the same cost.