Remove interaction event filter in destructor

QT fakes a mouse move when destructing which is
caught by our filter

obs/window-basic-interaction.cpp

@@ -45,7 +45,8 @@ OBSBasicInteraction::OBSBasicInteraction(QWidget *parent, OBSSource source_)
 
 	ui->preview->setMouseTracking(true);
 	ui->preview->setFocusPolicy(Qt::StrongFocus);
-	ui->preview->installEventFilter(BuildEventFilter());
+	eventFilter = BuildEventFilter();
+	ui->preview->installEventFilter(eventFilter);
 
 	if (cx > 400 && cy > 400)
 		resize(cx, cy);
@@ -63,6 +64,14 @@ OBSBasicInteraction::OBSBasicInteraction(QWidget *parent, OBSSource source_)
 	setWindowTitle(QTStr("Basic.InteractionWindow").arg(QT_UTF8(name)));
 }
 
+OBSBasicInteraction::~OBSBasicInteraction()
+{
+	// since QT fakes a mouse movement while destructing a widget
+	// remove our event filter
+	ui->preview->removeEventFilter(eventFilter);
+	delete eventFilter;
+}
+
 OBSEventFilter *OBSBasicInteraction::BuildEventFilter()
 {
 	return new OBSEventFilter(