Hexatron, I looked at the list on fextralife and only two skills relied on STRENGTH.
I just had to clarify the tooltip issue as that question comes up more often than you think. So that part isn't a bug, just the way the tooltips work. As to opinions about Metamorph ... that's up to debate of course.
If you want to see a somewhat accurate list of what scales with what, do a google for divinity original sin 2 fextralife.
They have a "somewhat accurate" list of all the skills, what type of armor blocks it and what stat (if any) it scales with.
If it says "basic attack" then it scales with your weapon and the associated stat. IE Dagger(Finesse), Mace(Strength), you get the picture.
That may help you make a better decision.
