Comment by cwizou

Installed iOS, iPad and macOS yesterday, some things are quickly obvious :

- In general, it always looks worse on dark mode

- The glass transparency effect is too local. It looks only at what's exactly below, so if you have two icons side by side in Control center on iPhone, one may show dark and the next one light, making you think one is active and the other one is inactive. It's pretty clear they wrestled with icons being too transparent so they blurred them a bunch, but it just makes it worse in those cases.

- It does have sensible defaults for (most) 3rd party icons that are flat, by adding some reticule on the flat logo to make it pop and look less out of place.

- The textfield contrasts can be horrendous. If you try to add a sky background to macOS messages (the first choice), the textfield is white text on lightly colored background. In Safari, if you have one of the default desktop background, you can get grey text on blue grayish background. There's absolutely no contrast and it's clear that they will have to address it.

- Safari for macOS takes the contrast issue above and pushes it to 11. It tries to reintroduce the universally hated concept of "the webpage takes over your browser window" but makes it worse. It's horrible enough to have your tabs and icons change color from white to black if you tab from say hacker news to github, but they've added a very slow (and buggy) animation for the UI on top. So while the tab switches immediately, the UI on top slowly morphs from white to black. Absolutely infuriating (and can't be disabled in beta 1). You also can't really see the selected tab in dark mode on a webpage with a black background.

In summary, some things look ok but in general it's really rough. The finder icon sums it best, they had a concept (transparent layers), and tried hard to shove everything through it, never stopping to question if maybe the concept needs adjusting when it clearly didn't work. I expect a bunch of changes, as is it's really rough.