diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/InlineClassDeclarationLowering.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/InlineClassDeclarationLowering.kt
index 19c1040b5b5..d7df1017bc3 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/InlineClassDeclarationLowering.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/InlineClassDeclarationLowering.kt
@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.backend.common.BodyLoweringPass
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
 import org.jetbrains.kotlin.backend.common.DeclarationTransformer
 import org.jetbrains.kotlin.backend.common.getOrPut
+import org.jetbrains.kotlin.backend.common.ir.isPure
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
 import org.jetbrains.kotlin.ir.builders.*
@@ -105,7 +106,15 @@ class InlineClassLowering(val context: CommonBackendContext) {
                                     }
                                     expression.transformChildrenVoid()
                                     if (isMemberFieldSet) {
-                                        return expression.value
+                                        return builder.irBlock {
+                                            if (!expression.value.isPure(true)) {
+                                                // Preserving side effects
+                                                +expression.value
+                                                // Adding empty block to provide Unit value.
+                                                // This is useful when original IrSetField is the last statement in a Unit-returning block.
+                                                +builder.irBlock {}
+                                            }
+                                        }
                                     }
                                     return expression
                                 }
diff --git a/compiler/testData/codegen/boxWasmJsInterop/kt59084.kt b/compiler/testData/codegen/boxWasmJsInterop/kt59084.kt
new file mode 100644
index 00000000000..fbc9b39045f
--- /dev/null
+++ b/compiler/testData/codegen/boxWasmJsInterop/kt59084.kt
@@ -0,0 +1,18 @@
+// TARGET_BACKEND: WASM
+
+inline class JsDynamic(val value: JsAny?)
+
+val JsAny?.jsDyn: JsDynamic get() = JsDynamic(this)
+
+fun test(): Boolean {
+    val jsDynamic: JsAny? = 1.toJsNumber()
+    val jsDyn = jsDynamic.jsDyn
+    return jsDyn.value == jsDynamic
+}
+
+fun box(): String {
+    if (!test()) {
+        return "Fail"
+    }
+    return "OK"
+}
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenWasmJsInteropTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenWasmJsInteropTestGenerated.java
index 18348e29e1c..323118c10d1 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenWasmJsInteropTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenWasmJsInteropTestGenerated.java
@@ -121,6 +121,12 @@ public class FirWasmCodegenWasmJsInteropTestGenerated extends AbstractFirWasmCod
         runTest("compiler/testData/codegen/boxWasmJsInterop/kt59082.kt");
     }
 
+    @Test
+    @TestMetadata("kt59084.kt")
+    public void testKt59084() throws Exception {
+        runTest("compiler/testData/codegen/boxWasmJsInterop/kt59084.kt");
+    }
+
     @Test
     @TestMetadata("lambdaAdapterNameClash.kt")
     public void testLambdaAdapterNameClash() throws Exception {
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenWasmJsInteropTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenWasmJsInteropTestGenerated.java
index 376ff24c2a6..1b292b442a5 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenWasmJsInteropTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenWasmJsInteropTestGenerated.java
@@ -121,6 +121,12 @@ public class K1WasmCodegenWasmJsInteropTestGenerated extends AbstractK1WasmCodeg
         runTest("compiler/testData/codegen/boxWasmJsInterop/kt59082.kt");
     }
 
+    @Test
+    @TestMetadata("kt59084.kt")
+    public void testKt59084() throws Exception {
+        runTest("compiler/testData/codegen/boxWasmJsInterop/kt59084.kt");
+    }
+
     @Test
     @TestMetadata("lambdaAdapterNameClash.kt")
     public void testLambdaAdapterNameClash() throws Exception {