UserAgent: Mozilla/5.0 (X11; CrOS armv7l 7978.62.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.87 Safari/537.36
Platform: 7978.62.0 (Official Build) beta-channel veyron_minnie

Steps to reproduce the problem:
1. Set layout to German NEO 2
2. Edit a text field
3. Press AltGr+j (the key printed with j in qwerty), AltGr+w, AltGr+v

What is the expected behavior?
A 4 appears, it then disappears (backspace) and a newline appears

What went wrong?
Only the 4 works, neither backspace nor return works

Did this work before? Yes Around a year ago (ish)

Chrome version: 50.0.2661.87  Channel: beta
OS Version: 7978.62.0
Flash Version: Shockwave Flash 21.0 r0

At http://neo-layout.org/ you can see layer 4, which is the affected layer. Some of the things work (number block, arrow keys, tab, home, end,...), some don't (backspace, delete, return,...).

I had my last chromebook around a year ago and had similar bugs there too, which then got fixed, as far as I remember.