PdfMultiPageView does not display the correct document

Hello, we've identified an issue with the pdfViewer that prevents the correct display of a specific PDF in certain circumstances. Specifically, if a "pdf" folder contains an initial PDF file named "A" and is displayed, subsequent displays of other PDFs followed by the deletion or movement of the original files may lead to unexpected behavior. If a new file named "A" is introduced into the same folder with different content, the initial "A" file continues to be displayed even though it is no longer present.

Our current development environment is Qt 6.4.1 with MSVC 2019 64-bit.

We have provided a zip file containing a mini-project that reproduces the error, along with a README file explaining its functionality.