Tribbles can only breed once an hour. When logged in type the /played command. It will tell you how much total time your character has been logged in. When that timer gets to a full hour mark your Mattson should eat your Romulan Ale and create a new Highison.
I haven't seen the /played command -not- be a reliable indicator for that yet.
Okay so after much expense and time I can report that ALL the 72% except for Quadro stack above 10 untis. Quadrotritacale is the only oddball. I also checked out the significant 64% and they stack as normal so now I'm REALLY wondering what's up!!!
Whoever it is that talks with the devs might wanna let them know. I tried to grab a screen shot but it wouldn't show my bank for some reason.
That's an interesting bit of information. That could be part of the reason Quadrotritacale is not producing the Tribbles types that are expected. There doesn't seem to be any obvious reason why there should a single unique food type that won't let you stack it like any other food.
I don't regularly talk to the Devs but I'll certainly bug report that in the game at the very least.