MacOS Mojave 10.14.6 MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
I have a 1 pixel gap between the top of the window and menu bar and I can't move the window close to the menu bar.
Is there any way to solve this problem?
MacOS – 1 pixel gap between window top and menu bar
macos
Best Answer
This appears to be the design of the Safari window. Safari (and other Apple apps) have a grey shadow border in dark theme and black in light theme :
It seems the color of the border is unaffected by the background - here is dark mode with colorful wallpaper and the border is still grey.
Whereas Firefox keeps a black border for both themes and so it doesn't show in dark mode.
Looking at other apps there seems to be a mix. Word acts like Safari while ITerm2 acts like Firefox.
There doesn't seem to be any way to remove this in Mojave - see this question. Older fixes/tweaks (like Toggle OSX shadows) don't work any more.