diff --git a/infer/src/checkers/LithoDomain.ml b/infer/src/checkers/LithoDomain.ml
index 732c3aeeb..941fd9214 100644
--- a/infer/src/checkers/LithoDomain.ml
+++ b/infer/src/checkers/LithoDomain.ml
@@ -83,7 +83,7 @@ module OldDomain = AbstractDomain.Map (LocalAccessPath) (CallSet)
 module NewDomain = struct
   module CreatedLocation = struct
     type t =
-      | ByCreateMethod of {location: Location.t [@ignore]; typ_name: Typ.name}
+      | ByCreateMethod of {location: Location.t; typ_name: Typ.name}
       | ByParameter of LocalAccessPath.t
     [@@deriving compare]
 
diff --git a/infer/tests/codetoanalyze/java/litho-required-props/RequiredProps.java b/infer/tests/codetoanalyze/java/litho-required-props/RequiredProps.java
index 2c63bd44e..a3d448d1f 100644
--- a/infer/tests/codetoanalyze/java/litho-required-props/RequiredProps.java
+++ b/infer/tests/codetoanalyze/java/litho-required-props/RequiredProps.java
@@ -370,7 +370,7 @@ public class RequiredProps {
     return builder.build();
   }
 
-  public Component setRequiredOnOneBothBranchesWithCreateOk(boolean b) {
+  public Component setRequiredOnOneBothBranchesWithCreateOk_FP(boolean b) {
     MyComponent.Builder builder = mMyComponent.create();
     if (b) {
       builder.prop1(new Object());
@@ -464,4 +464,28 @@ public class RequiredProps {
 
     return createJoin(b).prop1(new Object()).build();
   }
+
+  private static Component setProp3AndBuild(MyComponent.Builder builder) {
+    return setProp3(builder).build();
+  }
+
+  public void unionAtFunctionCallOk() {
+    MyComponent.Builder builder1 = mMyComponent.create().prop1(new Object()).prop3(new Object());
+    builder1.build();
+    MyComponent.Builder builder2 = mMyComponent.create().prop1(new Object());
+    MyComponent.Builder builder3 = mMyComponent.create();
+    setProp3AndBuild(builder2);
+  }
+
+  public void ignoreLocationOk() {
+    MyComponent.Builder builder1 = mMyComponent.create().prop1(new Object());
+    MyComponent.Builder builder2 = mMyComponent.create();
+    setProp3AndBuild(builder1);
+  }
+
+  public void ignoreLocationBad() {
+    MyComponent.Builder builder1 = mMyComponent.create();
+    MyComponent.Builder builder2 = mMyComponent.create().prop1(new Object());
+    setProp3AndBuild(builder1);
+  }
 }
diff --git a/infer/tests/codetoanalyze/java/litho-required-props/issues.exp b/infer/tests/codetoanalyze/java/litho-required-props/issues.exp
index c24e2e8fc..d75e8138a 100644
--- a/infer/tests/codetoanalyze/java/litho-required-props/issues.exp
+++ b/infer/tests/codetoanalyze/java/litho-required-props/issues.exp
@@ -22,11 +22,13 @@ codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.l
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.createInsideJoinBad(boolean):codetoanalyze.java.litho.MyComponent$Builder, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop is required for component codetoanalyze.java.litho.ResPropComponent, but is not set before the call to build()]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.doubleSetMissingBad():com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls Component$Builder Component$Builder.commonProp(Object),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.generalTypeForgot3Bad():java.lang.Object, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop3 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop1(Object)]
+codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.ignoreLocationBad():void, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.missingProp1InBothBranchesBeforeBuildBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.missingProp1InBothBranchesBeforeBuildBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component com.facebook.litho.MyLithoComponent, but is not set before the call to build(),calls MyLithoComponent$Builder MyLithoComponent$Builder.prop2(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.missingProp2InOneBranchBeforeBuildBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop2 is required for component com.facebook.litho.MyLithoComponent, but is not set before the call to build(),calls MyLithoComponent$Builder MyLithoComponent$Builder.prop1(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.missingProp3InOneBranchBeforeBuildBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop3 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop1(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.setProp3InCalleeButForgetProp1Bad():com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop2(Object),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.setRequiredOnBothBranchesMissingProp3Bad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop3 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop1(Object),calls MyComponent$Builder MyComponent$Builder.prop2(Object)]
+codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.setRequiredOnOneBothBranchesWithCreateOk_FP(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop2(Object),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.setRequiredOnOneBranchBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop2(Object),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]
 codetoanalyze/java/litho-required-props/RequiredProps.java, codetoanalyze.java.litho.RequiredProps.setRequiredOnOneBranchEffectfulBad(boolean):com.facebook.litho.Component, 0, MISSING_REQUIRED_PROP, no_bucket, ERROR, [@Prop prop1 is required for component codetoanalyze.java.litho.MyComponent, but is not set before the call to build(),calls MyComponent$Builder MyComponent$Builder.prop2(Object),calls MyComponent$Builder MyComponent$Builder.prop3(Object)]