@R.Acosta  

The issue occurs when filename is decoded and respective ASCII is an invalid or unsupported character. And since we dont have any file name, default behavior is to rename it end part of the url. This seems to be expected behaviour if this is your scenario.

See the latest PDF fixes in Resolved Issues.

Also see this support document.

Troubleshooting document attachment issues with PDF inline preview

Explanation

When the title of a PDF file is not specified in the PDF file’s document properties, the current clipboard thread appears as the PDF title. If a PDF file does not have title, PDF inline preview displays the PDF document title as the clipboard thread name. This is expected behavior because the PDF inline preview uses the iframe provided by the browser for displaying PDF files.

Solutions

Choose one of the following solutions to resolve issues with PDF file display in the inline preview:

• Update the document properties of the PDF file to include a document title.
• Perform the local change to disable PDF inline preview in any browser.

Local change

Extend the rule @baseclass.pyBrowserAttachmentTypeTable in your application ruleset and disable the PDF inline preview:

1. Override @baseclass.pyBrowserAttachmentTypeTable in your ruleset.
2. Set the PDF row in pyBrowserAttachmentTypeTable to return the value false.

⚠ This is a GenAI-powered tool. All generated answers require validation against the provided references.

Other scenarios:

Thread name on PDF attachment preview.