I have collected all the fragments for the stasis rifle but it still shows 100%.
If I scan another fragment, it just disappears and nothing happens. The other fragments would breakdown into titanium.
If that doesnt work try uninstalling and reinstalling the game without deleting your save data, it should either be complete upon reinstall or you should be able to scan it to complete it again. To keep this from happening again never quit Subnautica through the pause menu, backout to the dashboard after saving and close Subnautica from there.
Comments
Oh, that's weird. Most subnautica youtubers I follow (and the wiki too) say that the console commands need to be in caps.