Axios REST Preflight OPTIONS 400 status on IE/Edge - rest

Question

I have a problem with my requests using Edge/IE. I'm getting a code 400 code on
preflight OPTIONS.
I'm adding a 2 additional headers to all my requests in application with axios:
Authorization:
if ( token ) {
axios.defaults.headers.common[ 'Authorization' ] = 'Bearer ' + token;
} else {
delete axios.defaults.headers.common[ 'Authorization' ];
}
Accept-Language:
if ( lang ) {
axios.defaults.headers.common[ 'Accept-Language' ] = lang;
} else {
delete axios.defaults.headers.common[ 'Accept-Language' ];
}
Here's how my request headers works in Chrome:
Accept-Language: pl-PL
Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJOZXcgUGFzdG9yYWwgQXBwIiwiYXVkIjoiTmV3IHBhc3RvcmFsIHVzZXIiLCJpYXQiOjE1MTM1OTEzODUsImV4cCI6MTUxMzU5ODU4NSwidWlkIjoxMSwidHlwZSI6NCwibGFuZ3VhZ2UiOjEsImRpc3BsYXlOYW1lIjoiVGVzdG8gUHJvYm9zemN6eiJ9.qyFHZuCHC9-NpNqjY7keY7j4LE5zu5JKxK9VyAFwH60
Request headers in Edge:
Accept: */*
Accept-Encoding: gzip, deflate
Access-Control-Request-Headers: content-type
Access-Control-Request-Method: POST
Cache-Control: no-cache
Connection: Keep-Alive
Content-Length: 0
Host: 52.169.186.226
Origin: http://localhost:8080
Referer: http://localhost:8080/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299
Response headers:
Access-Control-Allow-Headers: X-Requested-With, Content-Type, Accept, Origin, Authorization
Access-Control-Allow-Methods: OPTIONS,POST
Access-Control-Allow-Origin: *
Connection: close
Content-Length: 0
Content-Type: text/html; charset=UTF-8
Date: Mon, 18 Dec 2017 11:29:49 GMT
Server: Apache/2.4.25 (Ubuntu)
When I remove Accept-Language header the application start working in Edge, but problem still exists in IE.
The only messages from browser is code http error 400 and the console log of error is:
description: "Network Error"
message: "Network Error"
stack: "Error: Network Error at createError (http://localhost:8080/index_bundle.js:68811:3) at handleError (http://localhost:8080/index_bundle.js:68656:7)"
Rest of the headers is standard for axios. On the backend we're using Slimp PHP framework.
Any idea how to debug the problem, or similar problems using standard REST requestes with React + Axios? Or what should I check in first order?