My solution to this problem is to use LastPass. The crypto is about as good as you can get, the only problem is that its not Opensource. LastPass runs literally everywhere, every browser, every device.

Markdown support in the notes would be quite nice. The UI could be improved for that usecase as well.

I really like having only app for those use cases.

I really like that I can use my Yubikey for 2f authentication over NFC.