Draw a background color for the timeline cell, and make it opaque, so it looks not-weird when dragging.

Evergreen/MainWindow/Timeline/Cell/TimelineTableCellView.swift

@@ -27,6 +27,10 @@ class TimelineTableCellView: NSTableCellView {
 		return true
 	}
 
+	override var isOpaque: Bool {
+		return true
+	}
+
 	var isEmphasized = false {
 		didSet {
 			dateView.emphasized = isEmphasized
@@ -40,6 +44,7 @@ class TimelineTableCellView: NSTableCellView {
 			dateView.selected = isSelected
 			feedNameView.selected = isSelected
 			titleView.selected = isSelected
+			needsDisplay = true
 		}
 	}
 	
@@ -108,6 +113,12 @@ class TimelineTableCellView: NSTableCellView {
 		feedNameView.rs_setFrameIfNotEqual(layoutRects.feedNameRect)
 	}
 
+	override func draw(_ dirtyRect: NSRect) {
+
+		isSelected ? NSColor.alternateSelectedControlColor.set() : NSColor.white.set()
+		dirtyRect.fill()
+	}
+
 	private func updateTitleView() {
 
 		titleView.attributedStringValue = cellData.attributedTitle