Let's see if we can reduce the number of angels dancing on the head of this pin a little:
1.) If you have content that works, and you change it, and it doesn't work any more, you have induced an error. You can have done it for good or ill motives, and you can call the error the program's fault; you can also call it strawberry jam. The fact remains, you broke it.
2.) The program vendor can take a program that works, change it, and content that previously works doesn't work any more. The vendor has induced the error. The vendor can have done it for good or ill motives and call the error the content creator's fault; the vendor can also call it peanut butter. The fact remains, the vendor broke it.
3.) Content modifier and program vendor may advance various arguments as to why they made this or that change which broke something that worked previously; this is all very well, but it's just hand-waving. If you broke it and don't fix it, it's on you.
4.) Arguments from privilege - "I bought your program, it should work the way I want it to!" or "We sold this program, so we'll tell you how it will work whether you like it or not!" are forms of hand-waving. The only place to start is at who made the change, and what the change caused.
(Steps down from soapbox and walks off into the sunset, listing slightly to port.)