diff --git a/clang/include/clang/AST/PrettyPrinter.h b/clang/include/clang/AST/PrettyPrinter.h
--- a/clang/include/clang/AST/PrettyPrinter.h
+++ b/clang/include/clang/AST/PrettyPrinter.h
@@ -130,6 +130,9 @@
   /// Suppresses printing of scope specifiers.
   unsigned SuppressScope : 1;
 
+  /// When SuppressScope is true, do not apply it to template parameters.
+  unsigned NoSuppressTemplateParamsScope : 1;
+
   /// Suppress printing parts of scope specifiers that are never
   /// written, e.g., for anonymous namespaces.
   unsigned SuppressUnwrittenScope : 1;
diff --git a/clang/lib/AST/TypePrinter.cpp b/clang/lib/AST/TypePrinter.cpp
--- a/clang/lib/AST/TypePrinter.cpp
+++ b/clang/lib/AST/TypePrinter.cpp
@@ -110,6 +110,23 @@
   }
 };
 
+class NoSuppressTemplateParamsScopeRAII {
+  PrintingPolicy &Policy;
+  bool OldSuppressScope;
+
+public:
+  explicit NoSuppressTemplateParamsScopeRAII(PrintingPolicy &Policy)
+      : Policy(Policy) {
+    OldSuppressScope = Policy.SuppressScope;
+    if (Policy.NoSuppressTemplateParamsScope)
+      Policy.SuppressScope = false;
+  }
+
+  ~NoSuppressTemplateParamsScopeRAII() {
+    Policy.SuppressScope = OldSuppressScope;
+  }
+};
+
 class TypePrinter {
   PrintingPolicy Policy;
   unsigned Indentation;
@@ -1370,6 +1387,7 @@
   // If this is a class template specialization, print the template
   // arguments.
   if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
+    NoSuppressTemplateParamsScopeRAII SuppressScopeRAII(Policy);
     ArrayRef<TemplateArgument> Args;
     TypeSourceInfo *TAW = Spec->getTypeAsWritten();
     if (!Policy.PrintCanonicalTypes && TAW) {
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -3792,6 +3792,7 @@
 
   clang::PrintingPolicy printing_policy(GetTypePrintingPolicy());
   printing_policy.SuppressScope = BaseOnly;
+  printing_policy.NoSuppressTemplateParamsScope = BaseOnly;
   return ConstString(qual_type.getAsString(printing_policy));
 }
 
diff --git a/lldb/test/API/lang/cpp/unique-types2/TestUniqueTypes.py b/lldb/test/API/lang/cpp/unique-types2/TestUniqueTypes.py
--- a/lldb/test/API/lang/cpp/unique-types2/TestUniqueTypes.py
+++ b/lldb/test/API/lang/cpp/unique-types2/TestUniqueTypes.py
@@ -36,6 +36,7 @@
         self.expect("image lookup -A -t 'Foo<int>::Nested<int>'", DATA_TYPES_DISPLAYED_CORRECTLY, error=True)
         self.expect("image lookup -A -t 'Nested<char>'", DATA_TYPES_DISPLAYED_CORRECTLY, substrs=["1 match found"])
         self.expect("image lookup -A -t '::Nested<char>'", DATA_TYPES_DISPLAYED_CORRECTLY, error=True)
+        self.expect("image lookup -A -t 'Foo<int>::Nested<ns::Bar>'", DATA_TYPES_DISPLAYED_CORRECTLY, substrs=["1 match found"])
 
         self.expect_expr("t1", result_type="Foo<char>")
         self.expect_expr("t1", result_type="Foo<char>")
@@ -49,6 +50,7 @@
         self.expect_expr("p6", result_type="FooPack<int, int>")
         self.expect_expr("p7", result_type="FooPack<int, int, int>")
         self.expect_expr("n1", result_type="Foo<int>::Nested<char>")
+        self.expect_expr("n2", result_type="Foo<int>::Nested<ns::Bar>")
 
     @skipIf(compiler=no_match("clang"))
     @skipIf(compiler_version=["<", "15.0"])
diff --git a/lldb/test/API/lang/cpp/unique-types2/main.cpp b/lldb/test/API/lang/cpp/unique-types2/main.cpp
--- a/lldb/test/API/lang/cpp/unique-types2/main.cpp
+++ b/lldb/test/API/lang/cpp/unique-types2/main.cpp
@@ -1,3 +1,7 @@
+namespace ns {
+struct Bar {};
+} // namespace ns
+
 template <class T> struct Foo {
   T t;
   template <class U> class Nested {
@@ -23,5 +27,6 @@
   FooPack<int, int, int> p7;
 
   Foo<int>::Nested<char> n1;
+  Foo<int>::Nested<ns::Bar> n2;
   // Set breakpoint here
 }