diff --git a/src/Lean/Meta/Hint.lean b/src/Lean/Meta/Hint.lean
index 1f87f1e99e..814254337c 100644
--- a/src/Lean/Meta/Hint.lean
+++ b/src/Lean/Meta/Hint.lean
@@ -342,7 +342,12 @@ def mkSuggestionsMessage (suggestions : Array Suggestion) (ref : Syntax)
       let suggestionText := suggestionArr[0]!.2.1
       let map ← getFileMap
       let rangeContents := map.source.extract range.start range.stop
-      let mut edits := readableDiff rangeContents suggestionText suggestion.diffGranularity
+      let edits ← do
+        if let some msgData := suggestion.messageData? then
+          pure #[(.insert, toString <| ← msgData.format)]
+        else
+          pure <| readableDiff rangeContents suggestionText suggestion.diffGranularity
+      let mut edits := edits
       if let some previewRange := suggestion.previewSpan? >>= Syntax.getRange? then
         if previewRange.includes range then
           let map ← getFileMap
diff --git a/src/Lean/Meta/Tactic/TryThis.lean b/src/Lean/Meta/Tactic/TryThis.lean
index 5893d5912d..4564f1d36b 100644
--- a/src/Lean/Meta/Tactic/TryThis.lean
+++ b/src/Lean/Meta/Tactic/TryThis.lean
@@ -88,6 +88,8 @@ The parameters are:
     message (only)
   * `postInfo?`: an optional string shown immediately after the replacement text in the widget
     message (only)
+  * `messageData?`: an optional `MessageData` displayed instead of `suggestion`.
+    If set, implies `diffGranularity = .none`.
   * `toCodeActionTitle?`: an optional function `String → String` describing how to transform the
     pretty-printed suggestion text into the code action text which appears in the lightbulb menu.
     If `none`, we simply prepend `"Try This: "` to the suggestion text.
@@ -125,6 +127,8 @@ The parameters are:
     message (only)
   * `postInfo?`: an optional string shown immediately after the replacement text in the widget
     message (only)
+  * `messageData?`: an optional `MessageData` displayed instead of `suggestion`.
+    If set, implies `diffGranularity = .none`.
   * `toCodeActionTitle?`: an optional function `String → String` describing how to transform the
     pretty-printed suggestion text into the code action text which appears in the lightbulb menu.
     If `none`, we simply prepend `"Try this: "` to the suggestion text.
diff --git a/src/Lean/Meta/TryThis.lean b/src/Lean/Meta/TryThis.lean
index 5e83133994..2bf93a521b 100644
--- a/src/Lean/Meta/TryThis.lean
+++ b/src/Lean/Meta/TryThis.lean
@@ -161,7 +161,8 @@ structure Suggestion where
   Note that this property is used only by the "try this" widget; it is ignored by the inline hint
   widget. -/
   style? : Option SuggestionStyle := none
-  /-- How to represent the suggestion as `MessageData`. This is used only in the info diagnostic.
+  /-- How to represent the suggestion as `MessageData`. This is used only in the text of the
+  widget diagnostic.
   If `none`, we use `suggestion`. Use `toMessageData` to render a `Suggestion` in this manner. -/
   messageData? : Option MessageData := none
   /-- How to construct the text that appears in the lightbulb menu from the suggestion text. If
@@ -171,7 +172,6 @@ structure Suggestion where
   deriving Inhabited
 
 attribute [deprecated "The `style?` property is not used anymore." (since := "2025-08-14")] Suggestion.style?
-attribute [deprecated "The `messageData?` property is not used anymore." (since := "2025-08-14")] Suggestion.messageData?
 
 /- Use `toMessageData` of the suggestion text. -/
 instance : ToMessageData Suggestion where