Overshields are back i guess?

Why does venture gain max shields when using abilities instead of overhealth. Its not overshields exactly because it adds a shields health pool so it can be healed back for the few seconds its there but since its only there few seconds the only thing this does is make it better to pocket venture. Its visually confusing to have this as a seperate hp pool rather than overhealth which is why they removed overshields and overarmor in the first place why bring it back with no real purpose?

It seems that they’re slowly retreating from the idea that all “overhealth” is green.