I would be nice to see your workflow in screenshots.
Character you are exporting, Blender import settings, outcome.
I am exporting a lot (including the latest release) but never seen anything you have described.
Does it happen on the Base characters or DAZ?
I also replied to your thread about rigify problem, where I also found no problem.
In another thread some problems was discovered with latest CC3 export but not directly relate to the problem you are having
https://forum.reallusion.com/452315/HIGH-HEELS-SAGAYou could also share the exported out of CC FBX or OBJ.