RichTextEditor: [Android] Error: "Cannot open url: file:///android_asset" in shell navigation with Maui 9.0.70 and above

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Unplanned

Last Updated: 08 Jul 2025 06:56 by ADMIN

Kevin

Created on: 07 Jul 2025 14:13

Category: UI for .NET MAUI

Type: Bug Report

RichTextEditor: [Android] Error: "Cannot open url: file:///android_asset" in shell navigation with Maui 9.0.70 and above

When navigating to a page with a RadRichTextEditor, it sometimes pops up an error on page load. It is inconsistent, but I attached an example gif. The xaml on the page I'm navigating to is basic:

I believe this problem started with MAUI version 9.0.70. Possibly with one of these changes:

https://github.com/dotnet/maui/pull/27003/files

https://github.com/dotnet/maui/pull/28354/files

Attached Files:

rich-text-editor-error.gif

3 comments

ADMIN

Didi

Posted on: 08 Jul 2025 06:56

Hi Kevin,

Thank you for the confirmation.

I have updated the status of the item to Unplanned and raised its priority. Yes the error dialog appears in MAUI 9.0.70 and above. I tested with 9.0.61 and no issues. I have also set a source to the RichTextEditor and still the error message appears.

I have replaced the RichTextEditor with a WebView but the error message does not appear in the WebView.

Regards,
Didi
Progress Telerik

Kevin

Posted on: 07 Jul 2025 15:50

Hi Didi,

I am using shell navigation. And yeah, that's what I was thinking regarding the WebView.

ADMIN

Didi

Posted on: 07 Jul 2025 15:48

Hello Kevin,

I created a sample app to test the scenario and I reproduced the behavior in shell navigation, in navigation page no issues. Could you please share what is the navigation you use in the app?

The shared links from Maui GitHub repo are for changes done in the WebView. The RichTextEditor control uses internally a WebView, so this could be the reason for such error message.

Looking forward to your reply.

Regards,
Didi
Progress Telerik

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