My friend Eli is running into issues with using fibers on modm and with segger ozone:
Here is a video of him doing the bug trigger steps:
https://youtu.be/j8def3Yxj28
Here is the segger form:
https://forum.segger.com/thread/9741-abandoned-running-in-ozone-causes-different-values-to-be-loaded-into-registers/