normal diamond pick axe , ti-con pix , even bedrock miner destroys literaly "core" with single hit

game does not crash , its only does render it in pink and , bedrock ores are destroyed instantly

no idea why but its annoying loosing over 3000 ores for no reason

good thing they still generate even with flatbedrock mod , no idea if thats the reason for this bug

found bedrock ore from IE , so its working , for now the only assumtion is that unloaded block is "harshen soul ore" which suppose to explode if u mine it, not with special tool , also its only semi trasparent ore

"harshen castle mod"

You should be able to see what the ore is supposed to be in the debug view (F3).
Tho it'd have to manually added as a valid ore to even be put into a bedrock ore... either disable that, or you can blacklist it (rather, all ores from that mod) using the oreModBlacklist config option.