Yes, the issue still persists and has to be solved by an update of firmware.
Suunto knows this, the only thing we can do is keep the fingers crossed and hope that they prioritize the issue as well and provide a solution with the next update. 🤞
I have experienced the situation you have described by myself - whiteout on a glacier and you have to find your way back around hidden crevasses with no traces left. In such a situation a track back / non-disappearing breadcrumb track is really, really useful and may be the extra margin of safety you need there.