The following change made some member variables of the EditPage class protected:
The change seems to have been intended simply as a cleanup, but it broke compatibility with at least one extension, Semantic Forms. (See bug: https://bugzilla.wikimedia.org/show_bug.cgi?id=67522 ) I don't know whether or not any other extensions are affected.
Extension compatibility might not be such a high priority, but given the nature of the commit (just a cleanup), I file this in case making EditPage::$mTokenOk public again is agreeable. (I also saw that some other visibility changes from the above commit, to another class, were adjusted when they caused another, more serious problem: https://bugzilla.wikimedia.org/show_bug.cgi?id=65665 )
If you want to keep EditPage::$mTokenOk private, an alternative proposal would be to add a method to return the $mTokenOk status. That would still require changing any code that now relies on reading $mTokenOk, but it would make for the cleanest change.