This is a very good point. I've believed for some time now that principal development on this game is done on iOS, which is where the developers do most of their test and validation. This is why so many glitches and exploits have cropped up on Android. That would explain why Android is hitting so many of these stupid glitches like this.
As an aside, as a Software Engineer, porting a program from 32-64 bit is for the most part not really a difficult task, especially if you're using higher-level programming languages. It's a little more tricky in C/C++.
This game is making way too much $ to shut it down. If I were to peg an event to signal the game's impending doom, I'd put it as SUP dropping out of the top 5-10. Or, the top 15 teams earning less than 50% of their current average in WD or FL.
An uptick in gold requirements is not necessarily a sign of the end, it's merely a sign that Gree has discovered what players are willing to spend gold on. I wish they'd just limit the gold requirements to FL and WD, and allow the active players to be rewarded on their participation in the other events.