Never heard it being an issue here. I think if you use some sense, solo off the front, solo trying to bridge, solo trying to get back on, it wouldn't seem to be an issue.
Do it pulling a paceline you omight be asking for trouble.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.