diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
index 46f19776fa..69109748bd 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
@@ -105,9 +105,14 @@ public class WTextEditorDialog extends Window implements EventListener<Event>{
 
 	private void init() {
 		setBorder("normal");
-		if (ThemeManager.isUseCSSForWindowSize()) {
+		if (!ThemeManager.isUseCSSForWindowSize()) {
 			ZKUpdateUtil.setWindowHeightX(this, 450);
 			ZKUpdateUtil.setWindowWidthX(this, 800);
+		} else {
+			addCallback(AFTER_PAGE_ATTACHED, t -> {
+				ZKUpdateUtil.setCSSHeight(this);
+				ZKUpdateUtil.setCSSWidth(this);
+			});
 		}
 		setStyle("position: absolute;");
 		setSizable(false);