I've seen this happening too many times (I won't say many times, but more than 5 times is TOO many times)
Can we be more cautious when dealing with "root" (no subpage / path) websites (which are often official websites)? Maybe look if a version is available at Google Cache?
Example diff:
https://nl.wikipedia.org/w/index.php?title=Sherlock_Holmes_Museum&diff=49605646&oldid=49600312
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