SoapUI 5.1.2 changes header's letters in HTTP Get request to lowercase

The issue that after changing something in header soapui changes all letters in header to lowercase. And request won't work if it contains property value. Steps:

1. Create HTTP request wich has endpoint with Project property: ${#Project#EndURL} for example

Actual result: Request URL is set as ${#project#endurl}. And it does not work because it does not find project property.

I found one solution. I can change EndPoint in HTTP TestRequest Property, but it is not comfortable I think

Could you please check it?