Compiler fails to compile static function with generics

[Donach]

Describe the bug
This appears when trying to compile our CustomLinkedList:
Fix errors in your code before building a release. Error in File CustomLinkedList.wurst:50: Encountered compiler bug near element exprmembermethoddot : java.lang.NullPointerException java.lang.NullPointerException

Older compiler (1339 for example) seemed to work fine.

[Donach]

compiler.log
languageServer.log

CustomLinkedList.txt
All files here

[Frotty]

need self contained example