dynamic crosshair changes the crosshair depending on whether the block you're looking at is efficiently harvested or not with the tool in your hand - but it doesn't seem to take into account that quark increases gold pickaxes' harvest tier, so whenever you look at ores whose harvest level is iron or above, dynamic crosshair will display that it's an incorrect tool, even though gold picks can mine those blocks

I'm really not sure what's going on here. Dynamic Crosshair appears to be using the same method Minecraft is to determine harvestability, and I can't find any reference in Quark's code to increasing gold's harvest tier...

really? it even has an option to change it, but it's under the gold tools having fortune config, not its own thing