It appears there may be two ways "short stroking" could cause a problem cycling.
1) As described above, the bolt is not drawn back far enough to eject the spent case and bolt is then closed picking up the next round in the magazine. I am unable to make either of my former military actions do this but suspect it may be more of an issue with factory CRF magnum actions with more or less standardized bottom metal. Or reloaded ammo that is either not crimped or too short OAL.
2) The other potential short stroke issue arises when the spent case is not drawn back far enough to eject and bolt is closed on an empty case. This, it would seem to me anyway, would not necessarily result in a serious jam, just a misfire easily corrected by cycling again correctly. However, large calibers without sharp shoulder cases might be more inclined to be "jammed" when trying to force an empty case back in the chamber. Edges of the large throat empty case could catch on the side of receiver ahead of the chamber. I would think much less potential of this happening with sharp shouldered narrow throat cases. In any event, the "jam" should be easily cleared by cycling again provided the gun has a healthy extractor.
Problem #1 is entirely a CRF potential issue while #2 can also occur with push feed. In fact, #2 might be more of an issue with push feed Rem 700 type actions. The empty case is ejected the moment the end clears the ejection port. Shooter sees the empty case flying out of the rifle and instinctively closes the bolt before the next round is picked up. CLICK. For CRF like Mauser 98, the empty case is not ejected until the END of bolt being drawn back. If the action, magazine, and ammo are all correctly designed and in concert, the empty case should eject just before the next round in magazine is picked up by bolt face. If the shooter does not see the empty case eject, he KNOWS the bolt has not been drawn back far enough to engage the next round in the magazine. An experienced shooter will not close the bolt till the empty ejects. CRF actions have a safeguard in that respect that is missing from push feed. Push feed operator can much more easily mistakenly close the bolt on an empty chamber than a CRF action.
Hank's grizzly bear issue I'm sure had nothing to do with short stroking, CRF, or push feed. I'll bet my crusty shorts the jam was caused by loading from the trap door floorplate. Any PH or outfitter who is using these guns as loners for clients hunting dangerous game should be loading the extra +1 round for clients. My experience is it's too complicated for novices.