Fix scrollbar in Options not working after focusing certain controls

Core/Other/FormSettings.cs

@@ -105,6 +105,10 @@ private void SelectTab(SettingsTab tab){
             tab.Button.BackColor = tab.Button.FlatAppearance.MouseDownBackColor;
 
             if (!tab.IsInitialized){
+                foreach(Control control in tab.Control.InteractiveControls){
+                    control.MouseLeave += control_MouseLeave;
+                }
+
                 tab.Control.OnReady();
             }
             
@@ -118,6 +122,10 @@ private void SelectTab(SettingsTab tab){
             currentTab = tab;
         }
 
+        private void control_MouseLeave(object sender, EventArgs e){
+            panelContents.Focus();
+        }
+
         private class SettingsTab{
             public Button Button { get; }
 

Core/Other/Settings/BaseTabSettings.cs

@@ -1,10 +1,22 @@
-using System.Windows.Forms;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
 using TweetDuck.Configuration;
 
 namespace TweetDuck.Core.Other.Settings{
     class BaseTabSettings : UserControl{
         protected static UserConfig Config => Program.UserConfig;
 
+        public IEnumerable<Control> InteractiveControls{
+            get{
+                foreach(Panel panel in Controls.OfType<Panel>()){
+                    foreach(Control control in panel.Controls){
+                        yield return control;
+                    }
+                }
+            }
+        }
+
         public BaseTabSettings(){
             Padding = new Padding(6);
         }