I am having this problem as well, but only on newly published hubs. For me, the 'link to this page' appears after about 24hrs.
I am finding this incredibly annoying, but at least the links are showing up again for me.
I looked at some of your hubs, and none that I looked at had the 'link to this page' even though they are much older than 24hrs!
Perhaps mention this in the forum, because this is certainly a problem.