johnpombrio

They have targeted the invisible bur issue to be fixed in a future patch. In the meantime, use the resource scanner and start swinging away for those invisible bur plants!

Yep, definitely a bug that Obsidian has targeted for a future patch (check Grounded issue tracker). In the meantime, I gathered 50 of them by using the resource scanner, going to one of the red squares, and carefully trying to get right into the middle of it and started swinging. I hit about 80% of the ones marked. A pain but it works.