Finally... my Read More link woes fixed? In Tweaking the Read More Tweak, I noted that I used the Read More Tweak module to make Drupal's strangely-invisible Read More links more prominent. But that module opened up another problem: the Read More link was appearing even when there was no more content, i.e., when the teaser showed the whole of the node.
The issues queue for the module discusses the matter, ending with confirmation that the latest version fixes things. Yet I kept getting that link after every teaser, whether for new posts or edits of old posts. Recent testing revealed something else: Somewhere along the line of upgrades and experiments, that module had stopped being at fault; I was now getting that persistent link in every teaser even with Read More Tweak disabled.
Things are fixed now. It's all so simple as to be embarrassing: Read more about Read More link troubles fixed?