[iOS] Missing Refreshing handler behaves inconsistently when LargePageTitles are enabled

[paulober]

Description

This PR documents and reproduces an iOS-specific inconsistency with RefreshView hosting a CollectionView when iOS Large Page Titles are enabled.

When the RefreshView has no Refreshing event handler set which resets IsRefreshing:

• With ios:Page.LargeTitleDisplay="Never": the pull-to-refresh loading indicator can remain visible indefinitely.
• With ios:Page.LargeTitleDisplay="Always": the indicator shows graphical glitches, then disappears, but the vertical space reserved for the indicator remains (layout stays “pushed down”).

All behaviors are captured using the artifact from #32081.

NotLargeTitle_ResetIsRefreshing.mov

NotLargeTitle_NotResetIsRefreshing.mov

LargeTitle_ResetIsRefreshing.mov

LargeTitle_NotResetIsRefreshing.mov

Steps to Reproduce

1. Create a page with a RefreshView containing a CollectionView.

2. Toggle the page large title mode using:

   • ios:Page.LargeTitleDisplay="Never" or
   • ios:Page.LargeTitleDisplay="Always"

3. Run two variants:

   • Variant A (with handler):

     <RefreshView ... Refreshing="RefreshView_OnRefreshing">

   • Variant B (no handler):

     <RefreshView ...>

4. On iOS, pull down to trigger the refresh indicator.

Observed results

• LargeTitleDisplay=Never + no handler: indicator can spin forever.
• LargeTitleDisplay=Always + no handler: indicator glitches, then disappears, but reserved space remains.

Expected result

• Missing Refreshing handler should not produce different visual/layout behavior depending on large title mode. If refresh cannot complete, behavior should be consistent (and ideally not leave the UI in a broken layout state).

(I used the linked reproduction repo from a different issue to create the uploaded videos)

Link to public reproduction project repository

https://github.com/paulober/maui-largetitles-bug

Version with bug

Unknown/Other

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

No response

Affected platforms

iOS

Affected platform versions

iOS 26 & 26.1 and maybe older ones that support LargeTitles

Did you find any workaround?

Use one of the following patterns to ensure the refresh completes deterministically:

1. Always handle Refreshing and reset refresh state

   private void RefreshView_OnRefreshing(object sender, EventArgs e)
   {
       try
       {
           // Do refresh work (async if needed)
       }
       finally
       {
           ((RefreshView)sender).IsRefreshing = false;
       }
   }

2. Bind IsRefreshing to a VM property and set it back to false when done

   <RefreshView IsRefreshing="{Binding IsRefreshing}" Command="{Binding RefreshCommand}">

   (Ensure IsRefreshing is set back to false after the command completes.)

3. Provide Command / CommandParameter instead of relying on the event
   (Same idea: ensure the refresh completion clears the refresh state.)

I also have this problem with my production app where I use a workaround to enable LargeTitles and have a command connected to the RefreshView which resets IsRefreshing but still has these graphical glitches - though I couldn't reliably reproduce this

[kubaflo]

@paulober great description of the issue!

[Ahamed-Ali]

This issue has been validated in Visual Studio Code 1.107.0 with 10.0.20-ci.main.25576.24 (from artifacts nuget) , 10.0.0 and 10.0.11. It can be reproduced on the iOS Platform.

Note : issue can reproduced from https://github.com/paulober/maui-largetitles-bug/tree/243daf48b14dd9a73514d41c1e1a0a33f2dca85b