David, thanks for your answer, and I understand what you're saying.
BUT: I have "build automatically" turned on all the time (I occasionally turn it off to build something manually, but then I turn it back on). Sometimes I want to see what's going on in a production design, and that's usually not a problem (meaning: my design elements aren't resigned just by opening them and looking at them). I've only had the same problem as Rod had ONE time, and I'm in the production database designs often!
I use a template to refresh the design of all my production databases.
Since this appears to be a fairly new problem, do you think this is a new "feature" of "build automatically" that was introduced in a flavor of Domino 853? My server is 8.5.3FP6 HF1219.