diff --git a/scaladoc-testcases/src/tests/groups.scala b/scaladoc-testcases/src/tests/groups.scala
new file mode 100644
index 000000000000..867e6965b8b3
--- /dev/null
+++ b/scaladoc-testcases/src/tests/groups.scala
@@ -0,0 +1,25 @@
+package tests
+package groups
+
+/** Groups
+ * @groupname foo Foo-group
+ * @groupprio bazz 10
+ * @groupdesc bar Description of group
+ * bar
+ */
+class Groups {
+  /** Method in group foo
+   * @group foo
+   */
+  def groupFoo: String = ???
+
+  /** Method in group bar
+   * @group bar
+   */
+  def groupBar: String = ???
+
+  /** Method in group bazz
+   * @group bazz
+   */
+  def groupBazz: String = ???
+}
diff --git a/scaladoc/src/dotty/tools/scaladoc/tasty/comments/Comments.scala b/scaladoc/src/dotty/tools/scaladoc/tasty/comments/Comments.scala
index 261de910d4f6..50f293487f57 100644
--- a/scaladoc/src/dotty/tools/scaladoc/tasty/comments/Comments.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/tasty/comments/Comments.scala
@@ -178,7 +178,7 @@ class MarkdownCommentParser(repr: Repr)(using dctx: DocContext)
   def stringToMarkup(str: String) =
     MarkdownParser.parseToMarkdown(str, markdown.DocFlexmarkParser(resolveLink))
 
-  def markupToString(t: mdu.Node): String = t.toString()
+  def markupToString(t: mdu.Node): String = t.getChars().toString()
 
   def markupToDokka(md: mdu.Node): DocPart = md
 
diff --git a/scaladoc/test/dotty/tools/scaladoc/ScaladocTest.scala b/scaladoc/test/dotty/tools/scaladoc/ScaladocTest.scala
index ad93d773cf4f..540364ec10bf 100644
--- a/scaladoc/test/dotty/tools/scaladoc/ScaladocTest.scala
+++ b/scaladoc/test/dotty/tools/scaladoc/ScaladocTest.scala
@@ -11,9 +11,10 @@ abstract class ScaladocTest(val name: String):
     val ctx = Scaladoc.run(args)(using testContext)
     op(using ctx)
 
+  def moduleDocContext = testDocContext(tastyFiles(name))
 
   def withModule(op: DocContext ?=> Module => Unit) =
-    given DocContext = testDocContext(tastyFiles(name))
+    given DocContext = moduleDocContext
     op(ScalaModuleProvider.mkModule())
 
   protected def getTempDir() : TemporaryFolder =
diff --git a/scaladoc/test/dotty/tools/scaladoc/tasty/comments/MemberGroupingTests.scala b/scaladoc/test/dotty/tools/scaladoc/tasty/comments/MemberGroupingTests.scala
new file mode 100644
index 000000000000..41fe11d83541
--- /dev/null
+++ b/scaladoc/test/dotty/tools/scaladoc/tasty/comments/MemberGroupingTests.scala
@@ -0,0 +1,117 @@
+package dotty.tools.scaladoc
+package tasty
+package comments
+
+import org.junit.{Test, Rule}
+import org.junit.Assert.{assertSame, assertTrue, assertEquals}
+import com.vladsch.flexmark.util.{ast => mdu, sequence}
+import com.vladsch.flexmark.{ast => mda}
+
+import wiki.WikiDocElement
+
+abstract class MemberGroupingTests(syntax: String) extends ScaladocTest("groups") {
+  import MemberGroupingTests._
+  override def moduleDocContext = super.moduleDocContext.copy(args = super.moduleDocContext.args.copy(defaultSyntax = List(syntax)))
+
+  val expectedMemberGroups = Map(
+    "groupFoo" -> "foo",
+    "groupBar" -> "bar",
+    "groupBazz" -> "bazz"
+  )
+
+  val expectedDescriptions = Map(
+    "bar" -> Seq("Description", "of", "group", "bar")
+  )
+
+  val expectedNames = Map(
+    "foo" -> "Foo-group"
+  )
+
+  val expectedPrio = Map(
+    "bazz" -> 10
+  )
+
+  override def runTest = withModule { module =>
+    val memberGroups = module.members.values.flatMap { member =>
+      member.docs.flatMap(_.group).map(g => member.name -> g)
+    }.toMap
+
+    val groupDescriptions: Map[String, String] = module.members.values
+      .flatMap { member =>
+        member.docs.map(_.groupDesc)
+      }
+      .foldLeft[Map[String, DocPart]](Map.empty)(_ ++ _)
+      .map {
+        case (k, s: Seq[WikiDocElement] @unchecked) => k -> s.map {
+          case i: wiki.Inline => flatten(i)
+          case b: wiki.Block => flatten(b)
+        }.mkString
+        case (k, n: mdu.Node) => k -> n.getChars.toString
+      }
+
+    val groupNames = module.members.values
+      .flatMap { member =>
+        member.docs.map(_.groupNames)
+      }
+      .foldLeft[Map[String, DocPart]](Map.empty)(_ ++ _)
+      .map {
+        case (k, s: Seq[WikiDocElement] @unchecked) => k -> s.map {
+          case i: wiki.Inline => flatten(i)
+          case b: wiki.Block => flatten(b)
+        }.mkString
+        case (k, n: mdu.Node) => k -> n.getChars.toString
+      }
+
+    val groupPrios = module.members.values
+      .flatMap { member =>
+        member.docs.map(_.groupPrio)
+      }
+      .foldLeft(Map.empty)(_ ++ _)
+
+    expectedMemberGroups.foreach {
+      case (memberName, groupName) => assertEquals(memberGroups.getOrElse(memberName, ""), groupName)
+    }
+
+    expectedDescriptions.foreach {
+      case (memberName, expectedWords) => assert(expectedWords.forall(word => groupDescriptions.getOrElse(memberName, "").contains(word)))
+    }
+
+    expectedNames.foreach {
+      case (group, groupName) => assertEquals(groupNames.getOrElse(group, ""), groupName)
+    }
+
+    expectedPrio.foreach {
+      case (group, prio) => assertEquals(groupPrios.getOrElse(group, -1), prio)
+    }
+  }
+}
+
+object MemberGroupingTests {
+  private def flatten(b: wiki.Inline): String = b match
+    case wiki.Text(t) => t
+    case wiki.Italic(t) => flatten(t)
+    case wiki.Bold(t) => flatten(t)
+    case wiki.Underline(t) => flatten(t)
+    case wiki.Superscript(t) => flatten(t)
+    case wiki.Subscript(t) => flatten(t)
+    case wiki.Link(_, t) => t.fold("")(flatten)
+    case wiki.Monospace(t) => flatten(t)
+    case wiki.RepresentationLink(t, _) => flatten(t)
+    case wiki.Chain(elems) => elems.headOption.fold("")(flatten)
+    case wiki.HtmlTag(t) => t
+    case wiki.Summary(t) => flatten(t)
+
+  private def flatten(b: wiki.Block): String = b match
+    case wiki.Paragraph(text) => flatten(text)
+    case wiki.Title(text, _) => flatten(text)
+    case wiki.Code(text) => text
+    case wiki.UnorderedList(elems) => elems.headOption.fold("")(flatten)
+    case wiki.OrderedList(elems, _) => elems.headOption.fold("")(flatten)
+    case wiki.DefinitionList(items) => items.headOption.fold("")(e => flatten(e._1))
+    case wiki.HorizontalRule => ""
+    case wiki.Table(header, columns, rows) => (header +: rows).flatMap(_.cells).flatMap(_.blocks).map(flatten).mkString
+}
+
+class WikiMemberGroupingTests extends MemberGroupingTests("wiki")
+
+class MarkdownMemberGroupingTests extends MemberGroupingTests("markdown")