Weird that the history isn’t populating, but I have seen delays before.
If you use this tool, you should be able to see the value of the device list field in full ( without the need for history) [EDGE][RELEASE] Simple Device Info Viewer
Load that tool (following the instructions on the link), find your harmony bridge device and then click the clipboard button. You will then be able to navigate to deviceList field and see the full contents.
