Affected version: GregTech 6.14.09
I suspect this may be a cross-mod interaction between GregTech and iguana_man’s Tweaks for Tinkers’ Construct because there’s a feature in Tweaks for Tinkers’ Construct (which I have enabled) that changes the gravel drop mechanics so it always drops gravel (rather than sometimes randomly dropping flint instead like it does in vanilla Minecraft).
I noticed when using my HV Tartarite Mining Drill to dig up Gravel that the drill was magnetically collecting a gravel block, but also dropping a gravel block where the block broke.
I thought my inventory might have been full at first, but I double checked and it wasn’t. I heard the pickup sound that you usually hear when automatically collecting things with the drill, watched the number of gravel blocks I had in my inventory increase, and saw a second gravel block drop.
That’s pretty much all I have to report.