UserAgent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0

Example URL:
https://codepen.io/anon/pen/ZjjOaO

Steps to reproduce the problem:
1. Add an <input type="date" min="2018-07-01" value="2018-07-02" />
2. Click on (or tab to) the year part of the input
3. Press the "down" key

What is the expected behavior?
The year should either be 2018 (because a date in 2017 isn't valid) or 2017 (but the form wouldn't be valid).

What went wrong?
The year is now 275760.
Either I really didn't pay attention last year or something is wrong!

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 67.0.3396.99 (Build officiel) Built on Ubuntu , running on neon 16.04 (64 bits)  Channel: stable
OS Version: 
Flash Version: Shockwave Flash 30.0 r0

Though this seems sound from a theoretical point of view, I don't think any user wants this behavior :)