At the moment LuvitRED support tab re-ordering but the order doesn't appear to be retained.
It would make software development easier if the order was retained
That was the intention when developing reorder-able workspaces.
I'll investigate & fix this.
I thought I might have been, could be because my code is old and has been moved up through the versions?
Or something broke in newer versions, though not a lot changes in the editor code between versions.
Probably it never really worked at all.
Should be fixed in next release.