Pop-up ocacity broken in current master branch . I use blur effect from kwin.
I run git bisect and found broken commit

eegorov@egorov-ey /var/tmp/qtcurve $ git bisect log
git bisect start
# bad: [d126bd52cd98e6c6c5c24c1a55b6b8c62d7039bb] Don't link KF5 frameworks in Qt5-only mode
git bisect bad d126bd52cd98e6c6c5c24c1a55b6b8c62d7039bb
# good: [b483df97d1fe10af8dfce3e1074c33eae6869891] [bugs, changelog] update
git bisect good b483df97d1fe10af8dfce3e1074c33eae6869891
# bad: [5956064eab884e59e9c51fdf28cb4534eeb74014] [lib/utils] qtcCall
git bisect bad 5956064eab884e59e9c51fdf28cb4534eeb74014
# good: [c1543d2f27e5ac6f6424537a53e3764233967e68] [qt5] try the second version of prePolishing in Qt5
git bisect good c1543d2f27e5ac6f6424537a53e3764233967e68
# bad: [8b789ef5cfcfe30c5620adbbf56f0487a926ea8a] [qt5] QTC_QT5_OLD_NVIDIA_ARROW_FIX
git bisect bad 8b789ef5cfcfe30c5620adbbf56f0487a926ea8a
# bad: [f1c0a46b7ce4de7dfb4e5e74db17f8d44632f7c5] [qt] eat our own property change event
git bisect bad f1c0a46b7ce4de7dfb4e5e74db17f8d44632f7c5
# good: [b74156deec86bfa84af3247758ab1faf7b9b4300] [macros] move
git bisect good b74156deec86bfa84af3247758ab1faf7b9b4300
# bad: [18f1a42fdf682ed07668389e014daafcf6cfa0b7] [qt5] removeEventFilter
git bisect bad 18f1a42fdf682ed07668389e014daafcf6cfa0b7
# good: [881219b5bd5394a6f51f1a92d3b611aa2fbc53a4] [qt4/kwin] rename member fields
git bisect good 881219b5bd5394a6f51f1a92d3b611aa2fbc53a4
# good: [a6804218e25e9e4d2f76b5cf19dda274c8d49f89] [qt5/utils] fix compile
git bisect good a6804218e25e9e4d2f76b5cf19dda274c8d49f89
# bad: [d62e1df96d877defd4ce8361497209c2ba66cdd2] [qt4] removeEventFilter
git bisect bad d62e1df96d877defd4ce8361497209c2ba66cdd2
# bad: [7f1e1be288145c88c2d8bb659fe725a505fd5d2e] [qt4] do not use translucent background
git bisect bad 7f1e1be288145c88c2d8bb659fe725a505fd5d2e
# first bad commit: [7f1e1be288145c88c2d8bb659fe725a505fd5d2e] [qt4] do not use translucent background


Reproducible: Always