Welcome to the forum.
Work the bolt faster. My Steyr JCS has the same problem. If you open the bolt slowly, the fired case falls down inside. Going fast, as Cooper wanted us to do, solves the problem by getting the case clear of the wider portion of the action faster than the ejector can finish rotating it to the limit of ejector travel. When you extract slowly, the case mouth stops against the wider part of the action with the ejector having too little remaining travel to flip the case out of the ejector port. By extracting fast, it is still flipping outward when the extractor pulls it out far enough to see air.
The ejectors on those actions need just another half millimeter or so of extension.