diff --git a/gdxapp4d-app-glyphdemo/src/main/java/love/distributedrebirth/gdxapp4d/app/glyphdemo/apps/DemoUnicodePlaneDeskApp.java b/gdxapp4d-app-glyphdemo/src/main/java/love/distributedrebirth/gdxapp4d/app/glyphdemo/apps/DemoUnicodePlaneDeskApp.java
index 885814fd..4fe26538 100644
--- a/gdxapp4d-app-glyphdemo/src/main/java/love/distributedrebirth/gdxapp4d/app/glyphdemo/apps/DemoUnicodePlaneDeskApp.java
+++ b/gdxapp4d-app-glyphdemo/src/main/java/love/distributedrebirth/gdxapp4d/app/glyphdemo/apps/DemoUnicodePlaneDeskApp.java
@@ -5,6 +5,7 @@ import java.util.ResourceBundle;
 import imgui.ImGui;
 import imgui.flag.ImGuiStyleVar;
 import imgui.flag.ImGuiTableFlags;
+import imgui.flag.ImGuiWindowFlags;
 import imgui.type.ImBoolean;
 import love.distributedrebirth.bassboonyd.BãßBȍőnAuthorInfoʸᴰ;
 import love.distributedrebirth.gdxapp4d.vrgem4.service.VrGem4Unicode4DService;
@@ -61,13 +62,10 @@ public class DemoUnicodePlaneDeskApp extends AbstractDeskApp implements DeskAppR
 				ImGui.text(buf.toString());
 			} else {
 				ImGui.pushStyleVar(ImGuiStyleVar.ItemSpacing, 0f, 0f);
-				DrawCharacter drawChar2 = unicode4DService.getCharacterForUnicode(' ');
-				if (drawChar2 != null) {
-					ImCharacter.render(drawChar2);
-					ImGui.sameLine(); // print before beginChild to fix row height of table
-				}
 				int offset = 33;
-				ImGui.beginChild("row"+plane.name()); // workaround for error; Too many vertices in ImDrawList using 16-bit indices.
+				// workaround for error; Too many vertices in ImDrawList using 16-bit indices.
+				// hard coded height to fix line height and row0 height + no scoll to disable mouse scroll
+				ImGui.beginChild("row"+plane.name(), 0f, ImCharacter.HEIGHT, false, ImGuiWindowFlags.NoScrollWithMouse);
 				for (int i=plane.getStart()+offset;i<plane.getStart()+33+offset;i++) {
 					DrawCharacter drawChar = unicode4DService.getCharacterForUnicode(i);
 					if (drawChar != null) {
diff --git a/gdxapp4d-lib-unicodezd/src/main/java/love/distributedrebirth/unicode4d/draw/ImCharacter.java b/gdxapp4d-lib-unicodezd/src/main/java/love/distributedrebirth/unicode4d/draw/ImCharacter.java
index eac58e7f..d3e7698a 100644
--- a/gdxapp4d-lib-unicodezd/src/main/java/love/distributedrebirth/unicode4d/draw/ImCharacter.java
+++ b/gdxapp4d-lib-unicodezd/src/main/java/love/distributedrebirth/unicode4d/draw/ImCharacter.java
@@ -10,8 +10,10 @@ import love.distributedrebirth.unicode4d.draw.DrawGlyphPath.ImGlyphQuadCurveTo;
 
 public class ImCharacter {
 	
+	public static final float HEIGHT = 26f;
+	
 	public static void render(DrawCharacter drawChar) {
-		ImVec2 size = new ImVec2(22f, 26f);
+		ImVec2 size = new ImVec2(22f, HEIGHT);
 		ImGui.invisibleButton("canvas", size.x, size.y);
 		ImVec2 p0 = ImGui.getItemRectMin();
 		ImVec2 p1 = ImGui.getItemRectMax(); // p1 = p0 + size
diff --git a/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/ImGuiSetup.java b/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/ImGuiSetup.java
index 1b444e02..e85f7fc3 100644
--- a/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/ImGuiSetup.java
+++ b/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/ImGuiSetup.java
@@ -15,6 +15,7 @@ import imgui.flag.ImGuiBackendFlags;
 import imgui.gl3.ImGuiImplGl3;
 import imgui.glfw.ImGuiImplGlfw;
 import love.distributedrebirth.bassboonyd.BãßBȍőnAuthorInfoʸᴰ;
+import love.distributedrebirth.unicode4d.draw.ImCharacter;
 
 /**
  * Create and shutdown of ImGui and font activations.
@@ -57,10 +58,11 @@ public class ImGuiSetup {
 		addRangeUnicodePlane0(fontBuilder);
 		final short[] glyphRanges = fontBuilder.buildRanges();
 		
+		float fontSize = ImCharacter.HEIGHT;
 		boolean first = true;
 		for (File font: fonts) {
 			logger.accept("Load font: "+font);
-			io.getFonts().addFontFromMemoryTTF(Gdx.files.absolute(font.getAbsolutePath()).readBytes(), 22, fontConfig, glyphRanges);
+			io.getFonts().addFontFromMemoryTTF(Gdx.files.absolute(font.getAbsolutePath()).readBytes(), fontSize, fontConfig, glyphRanges);
 			if (first) {
 				fontConfig.setMergeMode(true);
 				first = false;
diff --git a/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/view/DeskAppInputProcessor.java b/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/view/DeskAppInputProcessor.java
index f5dd84fe..df42dacc 100644
--- a/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/view/DeskAppInputProcessor.java
+++ b/gdxapp4d-vrgem4/src/main/java/love/distributedrebirth/gdxapp4d/vrgem4/view/DeskAppInputProcessor.java
@@ -3,6 +3,7 @@ package love.distributedrebirth.gdxapp4d.vrgem4.view;
 import com.badlogic.gdx.InputProcessor;
 
 import love.distributedrebirth.bassboonyd.BãßBȍőnAuthorInfoʸᴰ;
+import love.distributedrebirth.unicode4d.draw.ImCharacter;
 
 @BãßBȍőnAuthorInfoʸᴰ(name = "willemtsade", copyright = "©Δ∞ 仙上主天")
 public class DeskAppInputProcessor implements InputProcessor {
@@ -23,8 +24,8 @@ public class DeskAppInputProcessor implements InputProcessor {
 	}
 	
 	private boolean isFilterMenu(int screenY) {
-		// font22 + margin top-bottom = 26px
-		if (screenY <= 26) {
+		// font + margin top-bottom = 4px
+		if (screenY <= ImCharacter.HEIGHT+4) {
 			return true;
 		}
 		return false;