I have a real issue with all of them because they all have access to your passwords even if they tell you that it's not the case.

You cannot control anything that happens inside their apps and when you add a password that is then send to their servers 'encrypted' and is then 'decrypted' on another device that means that the key to en-/decrypt the password moved along with it.

So in the end they have the password to your passwords and that's an issue for me. I don't want that and I wouldn't want anybody else to be in that situation because besides abuse there's also always the option of data leakage and then you're really screwed.