The "issues" were mining pools that were using a flaw in the code to avoid paying the dev-fee on their block rewards! The devs fixed that as fast as they could and did a good job about it IMHO. Of course this was not easy for the mn owners because of the fast update cycle and some problems with it. Hopefully it will be easier for all of us from now on.

But one line of code for an update is as easy as it could possibly get