This is actually a kind of important setting to turn on if you're doing web development. At my work the developers use MacBooks and it's not rare to get bug reports about double scrollbars and whatnot which are caused by certain nested views with bad CSS, but it wasn't caught before release because the developer doesn't have scrollbars turned on, so you don't see it until a Windows user tries it.
Yeah that was already done. But it doesn't help too much. They kinda still fade in and out sometimes -- but I can't get a proof right now. In addition, they are still too narrow.
That isn't a VSCode thing. I have "always how scroll bars" enabled at the OS level and across many apps it only shows when the mouse is over the scrollable area. You know, because the accessibility setting is really just a poorly worded suggestion now.
You can turn them back on everywhere in Settings -> Appearance -> Show scroll bars always.