Solved
Strange behavior with cancelled change to a smart list or smart campaign's comment
I noticed that when I make a change to the comments of a smart list or smart campaign and click Cancel, the changes are discarded (at least the ones that can be seen on the 1 line display under the name). However, when I subsequently click the comment to edit it, the previously discarded changes appear in the comment. Has anyone else experienced this behavior? If so, I'll open a case with tech support.