Modpack version
1.76a

Issue
You can use a IF block braker with a fortune addon, that has a higher fortune level than level 3 to create more ressources out of ores than you need to make the ore in the combiner.

Logs
Input pastebin link to crash-report or latest log, if applicable

Thanks for the report. Sounds like we need to disable the Combiner more or less :P

Same thing is also possible with a SAG mill and grinding ball.

There are a few methods wich all include super high fortune levels to have a chance to make the combiner loop have a positive gain. I have seen builds with infinte Draconium for example. You can also loop coal through a mechanical squeezer and combiner with a 50% chance of gaining coal.
So the combiner is the least common denominator for all these issues. And i can only think of very few circumstances, where you would actually want to use the combiner other than to exploit super high fortune.
So i would say aswell, disable the combiner. (also removes the tiniest bit of clutter from JEI tabs)

another option would be to gate it behind the t6 void ore miner somehow... it is mostly used to duplicate draconium and when u have a t6 void ore miner there is very little reason to duplicate draconium... maybe adding aethium to the recipe or even a t6 void ore miner controller?

as someone who processes all ores before sending them to my ME system, it is very nice to be able to recreate the few ores that i need for automation.(draconium for slurry and magnesium for titanium come to mind)