Change forceUpdate flag to always force recalculation of width. Fix tests. (#13444)

Change-Id: Ie666e2867908160b1544d3bf8251802ea771660f

client/src/com/vaadin/client/ui/VFilterSelect.java

@@ -1950,7 +1950,8 @@ public class VFilterSelect extends Composite implements Field, KeyDownHandler,
              * wide.
              */
             int w = Util.getRequiredWidth(this);
-            if ((forceUpdate || !initDone || currentPage + 1 < 0)
+
+            if (forceUpdate || (!initDone || currentPage + 1 < 0)
                     && suggestionPopupMinWidth > w) {
                 /*
                  * We want to compensate for the paddings just to preserve the

uitest/src/com/vaadin/tests/components/ui/ComboboxStyleChangeWidthTest.java

@@ -18,9 +18,9 @@ package com.vaadin.tests.components.ui;
 import static org.junit.Assert.assertEquals;
 
 import org.junit.Test;
-import org.openqa.selenium.By;
-import org.openqa.selenium.WebElement;
 
+import com.vaadin.testbench.elements.ButtonElement;
+import com.vaadin.testbench.elements.ComboBoxElement;
 import com.vaadin.tests.tb3.MultiBrowserTest;
 
 /**
@@ -36,11 +36,10 @@ public class ComboboxStyleChangeWidthTest extends MultiBrowserTest {
     public void testWidthRetained() {
         openTestURL();
 
-        WebElement comboBox = driver
-                .findElement(By.className("v-filterselect"));
+        ComboBoxElement comboBox = $(ComboBoxElement.class).first();
         String oldStyle = comboBox.getAttribute("style");
 
-        WebElement button = driver.findElement(By.className("v-button"));
+        ButtonElement button = $(ButtonElement.class).first();
         button.click();
         String newStyle = comboBox.getAttribute("style");