Hm, there was an interesting change in bug 1628426 (multi-value related), where we went from being interested in debug frames with ref types to all debug frames. This was a complicated change doing many things, and I suspect it may accidentally have done some damage here.
Bug 1714086 Comment 5 Edit History
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Hm, there was an interesting change in bug 1628426 (multi-value related), where we went from being interested in stack maps for debug frames with ref types to all stack maps for debug frames. This was a complicated patch doing many things, and I suspect it may accidentally have done some damage here.