D7089: [Breeze Style] Fix flickering during KPageTreeView animation

[Hugo Pereira Da Costa]

hpereiradacosta added a comment.


  PS: same fix should probably go to oxygen :)

REPOSITORY
  R31 Breeze

REVISION DETAIL
  https://phabricator.kde.org/D7089

To: broulik, #plasma, hpereiradacosta
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart, lukas