Thanks, klundstrum, for responding.
I started a fresh page, manually keyed in the text, cleared the formatting, applied bullets, and saved with the same result. With the same page, I entered Edit mode, selected all the text and cleared formatting again, then saved. Still no change.
Edit mode:

Read mode:

While I appreciate the comments so far, I'm puzzled that no one has come forward with the same issue. Clearly, some setting or environment on my end causes it.
(In case you want to watch it happen, here's a screencast of me making a page with a bullet list, similar to the one above. It's 1:40 in length, but if you don't care to watch all the typing, just go the last ten seconds.)
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