I happened to check on the H2O tonight, but last time I checked was on a Forma

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There shouldn't be any complications related to rotation (with relative positioning, that is). (He said, hopeful ^^).
I can't think of anything that might be Clara specific off the top of my head, so, err, you could try switching to debug mode and checking the logs until I get a lightbulb moment ;p.
The fact that you saw it flash at least once rules out the timestamp checks, so at least there's that

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