The new closing off-topic description is self-contradictory:
This question was caused by a problem that can't be reproduced or a simple typographical error. While similar questions may be on-topic here, this one was solved in a manner unlikely to help future readers.
If the problem is not reproducible, it certainly hasn't been solved. The rewording is necessary. I would suggest to change the second sentence to:
While similar questions may be on-topic here, this one is unlikely to help future readers.