diff -up xmonad-contrib-0.17.1/XMonad/Hooks/EwmhDesktops.hs~ xmonad-contrib-0.17.1/XMonad/Hooks/EwmhDesktops.hs
--- xmonad-contrib-0.17.1/XMonad/Hooks/EwmhDesktops.hs~	2001-09-09 09:46:40.000000000 +0800
+++ xmonad-contrib-0.17.1/XMonad/Hooks/EwmhDesktops.hs	2022-09-14 20:50:49.173905849 +0800
@@ -490,6 +490,10 @@ setActiveWindow w = withDisplay $ \dpy -
     r <- asks theRoot
     a <- getAtom "_NET_ACTIVE_WINDOW"
     io $ changeProperty32 dpy r a wINDOW propModeReplace [fromIntegral w]
+    -- init _NET_WM_STATE to prevent gtk3 making apps look unfocused
+    a' <- getAtom "_NET_WM_STATE"
+    c' <- getAtom "ATOM"
+    io $ changeProperty32 dpy w a' c' propModeAppend []
 
 setDesktopViewport :: [Position] -> X ()
 setDesktopViewport positions = withDisplay $ \dpy -> do