Visual / geometry bug in The Matlan Waterways

I killed a unique jewel beetle in Matlan Waterways, he ran to some weird corner. Now everything he dropped showed for a bit and then I guess just went under the map, as some other minions. I lost 5 jewels. Here is my bug reference number: 1 855 495 599

My friend suggested that I change to mouse + keyboard and change visibility or something. It worked. But still there are minions under the map lol.