They changes the folders from being texted blue to the the blue arrows.
it seems you are one of those insiders that don't even check what you are installing and the changes new builds have but you are ready to jump and pretend it's a bug?....
well that's why I find sometimes insider program useless most of the time.
anyway, it's obvious that simple hacks and stuff won't be able to change it. deal with it. it's only on compressed folders, and not many people care about compressing folders anyway. if you don't like it, uncompress them and problem solved.