Guest Changed Review ----- Never seem this before

[Marija Petrovic]

Something so strange happened... guest wrote a review and submitted it. After that I've requested an additional payment from them (they had extra guest so I requested to be compensated for the additional person). Guest got so offended, and said they will contact airbnb to change their review... after I wrote a review for them (thinking that it is imposiblle for review to be modified after it was submitted) guests review was posted on my account, clarly modified saying how I requested additional payment after they checked out. I have never seen this happen before, anyone had similar experience?