Added a fix for the cropped rows on macOS 11.3

This is clearly a SwiftUI bug and it has been reported with FB9092071

OpenHaystack/OpenHaystack/HaystackApp/Views/AccessoryListEntry.swift

@@ -64,6 +64,7 @@ struct AccessoryListEntry: View {
                 .fill(accessory.isNearby ? Color.green : accessory.isActive ? Color.orange : Color.red)
                 .frame(width: 8, height: 8)
         }
+        .listRowBackground(Color.clear)
         .padding(EdgeInsets(top: 5, leading: 0, bottom: 5, trailing: 0))
         .contextMenu {
             Button("Delete", action: { self.delete(accessory) })

OpenHaystack/OpenHaystack/HaystackApp/Views/ManageAccessoriesView.swift

@@ -56,6 +56,7 @@ struct ManageAccessoriesView: View {
 
     /// Accessory List view.
     var accessoryList: some View {
+
         List(self.accessories, id: \.self, selection: $focusedAccessory) { accessory in
             AccessoryListEntry(
                 accessory: accessory,
@@ -74,9 +75,10 @@ struct ManageAccessoriesView: View {
                 alertType: self.$alertType,
                 delete: self.delete(accessory:),
                 deployAccessoryToMicrobit: self.deploy(accessory:),
-                zoomOn: { self.focusedAccessory = $0 })
+                zoomOn: { self.focusedAccessory = $0 }
+            )
         }
-        .listStyle(SidebarListStyle())
+        .listStyle(PlainListStyle())
 
     }
 
@@ -271,3 +273,11 @@ struct ManageAccessoriesView_Previews: PreviewProvider {
         ManageAccessoriesView(alertType: self.$alertType, focusedAccessory: self.$focussed, accessoryToDeploy: self.$deploy, showESP32DeploySheet: self.$showESPSheet)
     }
 }
+
+//FIXME: This is a workaround, because the List with Default style (and clear background) started to crop the rows on macOS 11.3
+extension NSTableView {
+    open override func viewDidMoveToWindow() {
+        super.viewDidMoveToWindow()
+        self.backgroundColor = .clear
+    }
+}