I do hope that there will be a solution for this situation, it seems a pity that license politicisation has gotten in the way of advancing open source projects.
Has there been a resolution to this situation yet or is the GPL still fragmenting these projects?
LibreDWG is still GPLv3+. QCAD was relicensed under GPLv3 too, but LibreCAD hasn't been updated against it yet, and I'm not sure whether it will be due to amount of changes in both projects since the splitting. FreeCAD is currently using a proprietary lib to open DWG in 2D.