UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36

Steps to reproduce the problem:
In latest version of chrome version 71.0.3578.80 any Accept header longer then 128 chars on CORS request is throwing exceptions.

This includes simple headers that dosent make OPTIONS request such as 

Accept-Language: fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5

if the Accept-Language is longer then 128 chars an exception is raised

What is the expected behavior?
Unlimited length of basic headers not triggering OPTIONS request

What went wrong?
Exception thrown

Did this work before? Yes Stopped working in Version 71* worked in <70

Does this work in other browsers? Yes

Chrome version: 71.0.3578.80  Channel: stable
OS Version: 10.0
Flash Version: