diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f33640ea0..4f7a297ba0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ### Fixed
 * Explicit interface with SpaceBeforeClassConstructor. [#2226](https://github.com/fsprojects/fantomas/issues/2226)
 * Spaces around binary operators in units of measure. [#2207](https://github.com/fsprojects/fantomas/issues/2207)
+* Trivia not restored after long identifier in SynField. [#2290](https://github.com/fsprojects/fantomas/pull/2290)
 
 ## [5.0.0-alpha-008] - 2022-05-28
 
diff --git a/src/Fantomas.Core.Tests/UnionTests.fs b/src/Fantomas.Core.Tests/UnionTests.fs
index 79722d0634..07d110ff6f 100644
--- a/src/Fantomas.Core.Tests/UnionTests.fs
+++ b/src/Fantomas.Core.Tests/UnionTests.fs
@@ -879,6 +879,25 @@ type Foo = // comment
         1
 """
 
+[<Test>]
+let ``trivia not restored after long identifier in SynField, 2103`` () =
+    formatSourceString
+        false
+        """
+type X = 
+  | A of int // This comment survives
+  | B of C.D // This comment survives
+"""
+        config
+    |> prepend newline
+    |> should
+        equal
+        """
+type X =
+    | A of int // This comment survives
+    | B of C.D // This comment survives
+"""
+
 [<Test>]
 let ``comment after equals in union`` () =
     formatSourceString