No this is the only one that looks like this. I chased the rest down and inspected and they all have healthy buttsCutting with scissors is not painful and it makes quick work of it. Looks like some had actually dried onto her vent tissue. Rub some Vaseline on it especially if it’s raw and red.
It happens to mine from time to time especially if I give a rich in fat type of treat.
You said a lot of your hens look like this?