diff --git a/plugins/Compressor/CompressorControlDialog.cpp b/plugins/Compressor/CompressorControlDialog.cpp
index d7350ba5966..86221312b67 100755
--- a/plugins/Compressor/CompressorControlDialog.cpp
+++ b/plugins/Compressor/CompressorControlDialog.cpp
@@ -48,7 +48,6 @@ CompressorControlDialog::CompressorControlDialog(CompressorControls* controls) :
 	m_controls(controls)
 {
 	setAutoFillBackground(false);
-	setAttribute(Qt::WA_OpaquePaintEvent, true);
 	setAttribute(Qt::WA_NoSystemBackground, true);
 	
 	setMinimumSize(MIN_COMP_SCREEN_X, MIN_COMP_SCREEN_Y);
diff --git a/src/gui/clips/AutomationClipView.cpp b/src/gui/clips/AutomationClipView.cpp
index 9b71bb74c74..e098710d9c7 100644
--- a/src/gui/clips/AutomationClipView.cpp
+++ b/src/gui/clips/AutomationClipView.cpp
@@ -55,8 +55,6 @@ AutomationClipView::AutomationClipView( AutomationClip * _clip,
 	connect( getGUI()->automationEditor(), SIGNAL(currentClipChanged()),
 			this, SLOT(update()));
 
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
-
 	setToolTip(m_clip->name());
 	setStyle( QApplication::style() );
 	update();
diff --git a/src/gui/clips/ClipView.cpp b/src/gui/clips/ClipView.cpp
index 9eb6acb6b94..24db73c98ce 100644
--- a/src/gui/clips/ClipView.cpp
+++ b/src/gui/clips/ClipView.cpp
@@ -113,7 +113,6 @@ ClipView::ClipView( Clip * clip,
 		s_textFloat->setPixmap( embed::getIconPixmap( "clock" ) );
 	}
 
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
 	setAttribute( Qt::WA_DeleteOnClose, true );
 	setFocusPolicy( Qt::StrongFocus );
 	setCursor( m_cursorHand );
diff --git a/src/gui/editors/AutomationEditor.cpp b/src/gui/editors/AutomationEditor.cpp
index 0e56b934ef8..9db41d24e69 100644
--- a/src/gui/editors/AutomationEditor.cpp
+++ b/src/gui/editors/AutomationEditor.cpp
@@ -115,8 +115,6 @@ AutomationEditor::AutomationEditor() :
 	connect( Engine::getSong(), SIGNAL(timeSignatureChanged(int,int)),
 						this, SLOT(update()));
 
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
-
 	//keeps the direction of the widget, undepended on the locale
 	setLayoutDirection( Qt::LeftToRight );
 
diff --git a/src/gui/editors/PianoRoll.cpp b/src/gui/editors/PianoRoll.cpp
index efe903cc2a4..844ded73015 100644
--- a/src/gui/editors/PianoRoll.cpp
+++ b/src/gui/editors/PianoRoll.cpp
@@ -274,8 +274,6 @@ PianoRoll::PianoRoll() :
 		s_textFloat = new SimpleTextFloat;
 	}
 
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
-
 	// add time-line
 	m_timeLine = new TimeLineWidget(m_whiteKeyWidth, 0, m_ppb,
 		Engine::getSong()->getPlayPos(Song::PlayMode::MidiClip),
diff --git a/src/gui/editors/TimeLineWidget.cpp b/src/gui/editors/TimeLineWidget.cpp
index f75b1cabfac..e11443755e2 100644
--- a/src/gui/editors/TimeLineWidget.cpp
+++ b/src/gui/editors/TimeLineWidget.cpp
@@ -58,7 +58,6 @@ TimeLineWidget::TimeLineWidget(const int xoff, const int yoff, const float ppb,
 	m_begin{begin},
 	m_mode{mode}
 {
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
 	move( 0, yoff );
 
 	setMouseTracking(true);
diff --git a/src/gui/instrument/PianoView.cpp b/src/gui/instrument/PianoView.cpp
index aeeb1fbbcd5..fe984ff956f 100644
--- a/src/gui/instrument/PianoView.cpp
+++ b/src/gui/instrument/PianoView.cpp
@@ -90,7 +90,6 @@ PianoView::PianoView(QWidget *parent) :
 	m_lastKey(-1),                   /*!< The last key displayed? */
 	m_movedNoteModel(nullptr)        /*!< Key marker which is being moved */
 {
-	setAttribute(Qt::WA_OpaquePaintEvent, true);
 	setFocusPolicy(Qt::StrongFocus);
 
 	// Black keys are drawn halfway between successive white keys, so they do not
diff --git a/src/gui/tracks/FadeButton.cpp b/src/gui/tracks/FadeButton.cpp
index 2f4727e5e29..386b5be41be 100644
--- a/src/gui/tracks/FadeButton.cpp
+++ b/src/gui/tracks/FadeButton.cpp
@@ -47,7 +47,6 @@ FadeButton::FadeButton(const QColor & _normal_color,
 	m_activatedColor( _activated_color ),
 	m_holdColor( holdColor )
 {
-	setAttribute(Qt::WA_OpaquePaintEvent, true);
 	setCursor(QCursor(embed::getIconPixmap("hand"), 3, 3));
 	setFocusPolicy(Qt::NoFocus);
 	activeNotes = 0;
diff --git a/src/gui/tracks/TrackLabelButton.cpp b/src/gui/tracks/TrackLabelButton.cpp
index dd19f3d19fc..c203fad8c23 100644
--- a/src/gui/tracks/TrackLabelButton.cpp
+++ b/src/gui/tracks/TrackLabelButton.cpp
@@ -46,7 +46,6 @@ TrackLabelButton::TrackLabelButton( TrackView * _tv, QWidget * _parent ) :
 	m_trackView( _tv ),
 	m_iconName()
 {
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
 	setAcceptDrops( true );
 	setCursor( QCursor( embed::getIconPixmap( "hand" ), 3, 3 ) );
 	setToolButtonStyle( Qt::ToolButtonTextBesideIcon );
diff --git a/src/gui/widgets/CPULoadWidget.cpp b/src/gui/widgets/CPULoadWidget.cpp
index db1f5cacc8f..8362e6713ef 100644
--- a/src/gui/widgets/CPULoadWidget.cpp
+++ b/src/gui/widgets/CPULoadWidget.cpp
@@ -46,7 +46,6 @@ CPULoadWidget::CPULoadWidget( QWidget * _parent ) :
 	m_changed( true ),
 	m_updateTimer()
 {
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
 	setFixedSize( m_background.width(), m_background.height() );
 
 	m_temp = QPixmap( width(), height() );
diff --git a/src/gui/widgets/Fader.cpp b/src/gui/widgets/Fader.cpp
index a647df416cf..c6a8b47ba62 100644
--- a/src/gui/widgets/Fader.cpp
+++ b/src/gui/widgets/Fader.cpp
@@ -72,7 +72,6 @@ Fader::Fader(FloatModel* model, const QString& name, QWidget* parent) :
 	}
 
 	setWindowTitle(name);
-	setAttribute(Qt::WA_OpaquePaintEvent, false);
 	// For now resize the widget to the size of the previous background image "fader_background.png" as it was found in the classic and default theme
 	constexpr QSize minimumSize(23, 116);
 	setMinimumSize(minimumSize);
diff --git a/src/gui/widgets/Oscilloscope.cpp b/src/gui/widgets/Oscilloscope.cpp
index 28ddff93841..bf66fa46542 100644
--- a/src/gui/widgets/Oscilloscope.cpp
+++ b/src/gui/widgets/Oscilloscope.cpp
@@ -51,7 +51,6 @@ Oscilloscope::Oscilloscope( QWidget * _p ) :
 	m_clippingColor(255, 64, 64)
 {
 	setFixedSize( m_background.width(), m_background.height() );
-	setAttribute( Qt::WA_OpaquePaintEvent, true );
 	setActive( ConfigManager::inst()->value( "ui", "displaywaveform").toInt() );
 
 	const fpp_t frames = Engine::audioEngine()->framesPerPeriod();