diff --git a/analysis/analysis-api-impl-base/tests/org/jetbrains/kotlin/analysis/api/impl/base/test/cases/components/inheritorsProvider/AbstractSealedInheritorsTest.kt b/analysis/analysis-api-impl-base/tests/org/jetbrains/kotlin/analysis/api/impl/base/test/cases/components/inheritorsProvider/AbstractSealedInheritorsTest.kt
index 7b8e9bd57be..1d70b3ec32f 100644
--- a/analysis/analysis-api-impl-base/tests/org/jetbrains/kotlin/analysis/api/impl/base/test/cases/components/inheritorsProvider/AbstractSealedInheritorsTest.kt
+++ b/analysis/analysis-api-impl-base/tests/org/jetbrains/kotlin/analysis/api/impl/base/test/cases/components/inheritorsProvider/AbstractSealedInheritorsTest.kt
@@ -6,6 +6,9 @@
 package org.jetbrains.kotlin.analysis.api.impl.base.test.cases.components.inheritorsProvider
 
 import org.jetbrains.kotlin.analysis.api.impl.base.test.SymbolByFqName
+import org.jetbrains.kotlin.analysis.api.renderer.declarations.impl.KtDeclarationRendererForSource
+import org.jetbrains.kotlin.analysis.api.renderer.types.impl.KtTypeRendererForSource
+import org.jetbrains.kotlin.analysis.api.renderer.types.renderers.KtUsualClassTypeRenderer
 import org.jetbrains.kotlin.analysis.api.symbols.KtNamedClassOrObjectSymbol
 import org.jetbrains.kotlin.analysis.test.framework.base.AbstractAnalysisApiBasedTest
 import org.jetbrains.kotlin.psi.KtFile
@@ -21,7 +24,30 @@ abstract class AbstractSealedInheritorsTest : AbstractAnalysisApiBasedTest() {
                     ?: error("Expected a single named class to be specified.")
 
                 classSymbol.getSealedClassInheritors().joinToString("\n\n") { inheritor ->
-                    "${inheritor.classIdIfNonLocal!!}\n${inheritor.render()}"
+                    // Render sealed inheritor supertypes as fully expanded types to avoid discrepancies between Standalone and IDE mode.
+                    //
+                    // Assume the following code is compiled to a library:
+                    //
+                    // ```
+                    // open class C
+                    // typealias T = C
+                    // class A : T()
+                    // ```
+                    //
+                    // The supertype of `A` will be different in Standalone and IDE mode:
+                    //
+                    //  - Standalone: The compiled library contains fully expanded types, so `A`'s supertype is `C`.
+                    //  - IDE: Symbols from libraries are deserialized from stubs, where type aliases are currently not fully expanded, so
+                    //    `A`'s supertype is `T`.
+                    //
+                    // We want to render `class A : C()` in both cases, so we need to expand the type alias.
+                    val declarationRenderer = KtDeclarationRendererForSource.WITH_QUALIFIED_NAMES.with {
+                        typeRenderer = KtTypeRendererForSource.WITH_QUALIFIED_NAMES.with {
+                            usualClassTypeRenderer = KtUsualClassTypeRenderer.AS_FULLY_EXPANDED_CLASS_TYPE_WITH_TYPE_ARGUMENTS
+                        }
+                    }
+
+                    "${inheritor.classIdIfNonLocal!!}\n${inheritor.render(declarationRenderer)}"
                 }
             }
 
diff --git a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedFromDependency.txt b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedFromDependency.txt
index 16828a2798d..8d8200839c3 100644
--- a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedFromDependency.txt
+++ b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedFromDependency.txt
@@ -2,7 +2,7 @@ foo/bar/OneSealedChild
 class OneSealedChild : foo.bar.MySealedClass()
 
 foo/bar/ThreeSealedChild
-class ThreeSealedChild : foo.bar.T2()
+class ThreeSealedChild : foo.bar.MySealedClass()
 
 foo/bar/TwoSealedChild
-class TwoSealedChild : foo.bar.T1()
+class TwoSealedChild : foo.bar.MySealedClass()
diff --git a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedSameModule.txt b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedSameModule.txt
index 16828a2798d..8d8200839c3 100644
--- a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedSameModule.txt
+++ b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedClassTypeAliasedSameModule.txt
@@ -2,7 +2,7 @@ foo/bar/OneSealedChild
 class OneSealedChild : foo.bar.MySealedClass()
 
 foo/bar/ThreeSealedChild
-class ThreeSealedChild : foo.bar.T2()
+class ThreeSealedChild : foo.bar.MySealedClass()
 
 foo/bar/TwoSealedChild
-class TwoSealedChild : foo.bar.T1()
+class TwoSealedChild : foo.bar.MySealedClass()
diff --git a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedFromDependency.txt b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedFromDependency.txt
index 9b01fbc099d..3458ee1d46e 100644
--- a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedFromDependency.txt
+++ b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedFromDependency.txt
@@ -2,7 +2,7 @@ foo/bar/OneSealedChild
 class OneSealedChild : foo.bar.MySealedInterface
 
 foo/bar/ThreeSealedChild
-class ThreeSealedChild : foo.bar.T2
+class ThreeSealedChild : foo.bar.MySealedInterface
 
 foo/bar/TwoSealedChild
-class TwoSealedChild : foo.bar.T1
+class TwoSealedChild : foo.bar.MySealedInterface
diff --git a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedSameModule.txt b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedSameModule.txt
index 9b01fbc099d..3458ee1d46e 100644
--- a/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedSameModule.txt
+++ b/analysis/analysis-api/testData/components/inheritorsProvider/sealedInheritors/sealedInterfaceTypeAliasedSameModule.txt
@@ -2,7 +2,7 @@ foo/bar/OneSealedChild
 class OneSealedChild : foo.bar.MySealedInterface
 
 foo/bar/ThreeSealedChild
-class ThreeSealedChild : foo.bar.T2
+class ThreeSealedChild : foo.bar.MySealedInterface
 
 foo/bar/TwoSealedChild
-class TwoSealedChild : foo.bar.T1
+class TwoSealedChild : foo.bar.MySealedInterface