diff --git a/api/src/main/java/net/kyori/adventure/text/TextReplacementRenderer.java b/api/src/main/java/net/kyori/adventure/text/TextReplacementRenderer.java
index 483330ce3..01e963206 100644
--- a/api/src/main/java/net/kyori/adventure/text/TextReplacementRenderer.java
+++ b/api/src/main/java/net/kyori/adventure/text/TextReplacementRenderer.java
@@ -173,6 +173,7 @@ private TextReplacementRenderer() {
         }
         if (children != null) {
           children.add(replaced);
+          first = false;
         }
       }
     } else {
diff --git a/api/src/test/java/net/kyori/adventure/text/TextAssertions.java b/api/src/test/java/net/kyori/adventure/text/TextAssertions.java
index d7071db64..0a8ee1255 100644
--- a/api/src/test/java/net/kyori/adventure/text/TextAssertions.java
+++ b/api/src/test/java/net/kyori/adventure/text/TextAssertions.java
@@ -26,10 +26,12 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
 import java.util.Set;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
 import net.kyori.adventure.text.format.Style;
 import net.kyori.adventure.text.format.TextDecoration;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import net.kyori.examination.string.MultiLineStringExaminer;
+import org.junit.jupiter.api.Assertions;
 
 public final class TextAssertions {
   private static final Set<TextDecoration> DECORATIONS = ImmutableSet.copyOf(TextDecoration.values());
@@ -51,8 +53,24 @@ public static void assertDecorations(final Style style, final Set<TextDecoration
   private static void assertDecorationsAre(final Style style, final Set<TextDecoration> decorations, final TextDecoration.State state) {
     if (!decorations.isEmpty()) {
       for (final TextDecoration decoration : decorations) {
-        assertEquals(state, style.decoration(decoration));
+        Assertions.assertEquals(state, style.decoration(decoration));
       }
     }
   }
+
+  public static void assertEquals(final Component expected, final Component actual) {
+    Assertions.assertEquals(prettyPrint(expected), prettyPrint(actual));
+  }
+
+  public static void assertEquals(final Component expected, final Component actual, final String message) {
+    Assertions.assertEquals(prettyPrint(expected), prettyPrint(actual), message);
+  }
+
+  public static void assertEquals(final Component expected, final Component actual, final Supplier<String> message) {
+    Assertions.assertEquals(prettyPrint(expected), prettyPrint(actual), message);
+  }
+
+  private static final String prettyPrint(final Component component) {
+    return component.examine(MultiLineStringExaminer.simpleEscaping()).collect(Collectors.joining("\n"));
+  }
 }
diff --git a/api/src/test/java/net/kyori/adventure/text/TextReplacementRendererTest.java b/api/src/test/java/net/kyori/adventure/text/TextReplacementRendererTest.java
index f39cc94e5..b22676747 100644
--- a/api/src/test/java/net/kyori/adventure/text/TextReplacementRendererTest.java
+++ b/api/src/test/java/net/kyori/adventure/text/TextReplacementRendererTest.java
@@ -258,4 +258,25 @@ void testFullMatchReplaceWithStyle() {
     final Component expected = Component.text("world", NamedTextColor.RED, TextDecoration.BOLD);
     assertEquals(expected, replaced);
   }
+
+  // https://github.com/KyoriPowered/adventure/issues/618
+  @Test
+  void testDoesNotDuplicateComponents() {
+    final Component original = Component.text()
+      .content("%n")
+      .append(Component.text("duplicate me"), Component.text("b%n"))
+      .build();
+
+    final Component replaced = original.replaceText(c -> c.matchLiteral("%n").replacement("*"));
+
+    final Component expected = Component.text()
+      .content("*")
+      .append(
+        Component.text("duplicate me"),
+        Component.text("b").append(Component.text("*"))
+      )
+      .build();
+
+    TextAssertions.assertEquals(expected, replaced);
+  }
 }