diff --git a/tunable/CommonDimensions.java b/tunable/CommonDimensions.java
index 4953592..6290941 100644
--- a/tunable/CommonDimensions.java
+++ b/tunable/CommonDimensions.java
@@ -4,7 +4,6 @@
 
 public enum CommonDimensions {
   WINDOW (1370, 962),
-  WINDOW_MINIMUM_SIZE (1350, 460),
   UPPER_PANEL (1370, 181),
   LOWER_PANEL (1370, 91),
   PLUS_MINUS_SELECTOR (55, 55),
diff --git a/ui/components/clickable/RoundedComboBox.java b/ui/components/clickable/RoundedComboBox.java
index a12f4ff..a2be636 100644
--- a/ui/components/clickable/RoundedComboBox.java
+++ b/ui/components/clickable/RoundedComboBox.java
@@ -75,7 +75,9 @@ public void setArrowDirection(int arrowDirection) {
     setUI(
       new BasicComboBoxUI() {
         @Override protected JButton createArrowButton() {
-          return new ArrowButton(SwingConstants.SOUTH);
+          final var button = new ArrowButton(SwingConstants.SOUTH);
+          button.setOpaque(false);
+          return button;
         }
       }
     );
diff --git a/ui/components/containers/BasePanel.java b/ui/components/containers/BasePanel.java
index 811a780..c411363 100644
--- a/ui/components/containers/BasePanel.java
+++ b/ui/components/containers/BasePanel.java
@@ -17,10 +17,6 @@ public BasePanel() {
   }
   
   @Override public void composeView() {
-    setPreferredSize(
-      CommonDimensions.WINDOW.getDimension()
-    );
-
     setLayout(
       new BorderLayout()
     );
diff --git a/ui/components/containers/Window.java b/ui/components/containers/Window.java
index 77381d6..78b1cca 100644
--- a/ui/components/containers/Window.java
+++ b/ui/components/containers/Window.java
@@ -18,6 +18,7 @@
 import javax.swing.*;
 import javax.swing.table.TableModel;
 
+import java.awt.Dimension;
 import java.awt.print.*;
 
 import org.jopendocument.dom.spreadsheet.SpreadSheet;
@@ -40,6 +41,7 @@ public class Window extends JFrame implements IComponent {
   private final SaveFileDialog saveOdsDialog;
   private final LoadFileDialog loadFileDialog;
   private IRecordFormatter recordFormatter;
+  private BasePanel basePanel;
 
   public Window(String name) {
     super(name);
@@ -53,7 +55,6 @@ public Window(String name) {
         CommonFonts.TEXT_NORMAL.getFont().deriveFont(DEFAULT_FONT_SIZE)
       );
     
-    setMinimumSize(CommonDimensions.WINDOW_MINIMUM_SIZE.getDimension());
     setLocationRelativeTo(null);
     
     saveItem = new MenuItem("Save");
@@ -62,6 +63,7 @@ public Window(String name) {
     csvItem = new MenuItem("CSV");
     openDocumentItem = new MenuItem("OpenDocument");
     printerItem = new MenuItem("Printer");
+    basePanel = new BasePanel();
     
     loadFileDialog = new LoadFileDialog(
       this,
@@ -116,9 +118,7 @@ public Window(String name) {
   }
   
   @Override public void composeView() {
-    add(
-      new BasePanel()
-    );
+    add(basePanel);
     
     setJMenuBar(
       new MenuBar(
@@ -154,6 +154,10 @@ public Window(String name) {
     );
 
     pack();
+    setMinimumSize(new Dimension(getWidth(), getHeight()));
+
+    basePanel.setPreferredSize(CommonDimensions.WINDOW.getDimension());
+    pack();
   }
 
   @Override public void registerCallbacks() {