fix render artefacts remaining after video playback

client/lobby/CBonusSelection.cpp

@@ -72,7 +72,7 @@ CBonusSelection::CBonusSelection()
 
 	buttonStart = std::make_shared<CButton>(Point(475, 536), AnimationPath::builtin("CBBEGIB.DEF"), CButton::tooltip(), std::bind(&CBonusSelection::startMap, this), EShortcut::GLOBAL_ACCEPT);
 	buttonRestart = std::make_shared<CButton>(Point(475, 536), AnimationPath::builtin("CBRESTB.DEF"), CButton::tooltip(), std::bind(&CBonusSelection::restartMap, this), EShortcut::GLOBAL_ACCEPT);
-	buttonVideo = std::make_shared<CButton>(Point(705, 214), AnimationPath::builtin("CBVIDEB.DEF"), CButton::tooltip(), [this](){ GH.windows().createAndPushWindow<CPrologEpilogVideo>(getCampaign()->scenario(CSH->campaignMap).prolog, nullptr); });
+	buttonVideo = std::make_shared<CButton>(Point(705, 214), AnimationPath::builtin("CBVIDEB.DEF"), CButton::tooltip(), [this](){ GH.windows().createAndPushWindow<CPrologEpilogVideo>(getCampaign()->scenario(CSH->campaignMap).prolog, [this](){ redraw(); }); });
 	buttonBack = std::make_shared<CButton>(Point(624, 536), AnimationPath::builtin("CBCANCB.DEF"), CButton::tooltip(), std::bind(&CBonusSelection::goBack, this), EShortcut::GLOBAL_CANCEL);
 
 	campaignName = std::make_shared<CLabel>(481, 28, FONT_BIG, ETextAlignment::TOPLEFT, Colors::YELLOW, CSH->si->getCampaignName());