When Promoting Dupe from apprentice miner to miner, queued dig jobs that requires a miner or seasoned miner will no longer show icon to show that the dig is queued, but when hovered with mouse will say dig is queued.
when this bug occurred I had miner level materials already queued, but no miner level dupes. when one of my apprentice level miners got promoted to miner, the bug then occurred.
I don't have seasoned miners, so seasoned miner level required icon still shows up on those materials that need them to dig.
reloading save or game did not fix bug.
Update: when promoting from apprentice miner to miner, the same bug happens to miner level materials. so materials like Abyssalite will also not show queued dig icon
queue apprentice miner level materials for digging without dupe with apprentice miner job. promote dupe to apprentice miner job. bug should occur.