[Problem/Bug]: WebView2 displays a blank page when opening a PDF file with parameter "#zoom=300,400,500"

[lh0328]

What happened?

The path carrying parameter of the opened PDF file is "#zoom=300,400,500", and the result is displayed as a blank page, but not all PDF files will be displayed as a blank page. I am very confused about this and do not understand why some PDF files will be displayed as a blank page. Please help me.

Importance

Moderate. My app's user experience is affected, but still usable.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

121.0.2277.128

SDK Version

1.0.2210.55

Framework

Win32

Operating System

Windows 10

OS Version

19045.4651

Repro steps

Call the Navigation method and pass the path "D:\Work\PDFList\ 07000003.pdF #zoom=300,400,500".(PDF file total 2 pages)
The result appears as a blank page.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

AB#53949951

[lh0328]

This problem occurs when the WebView2 window is relatively small, and the PDF file is only 2 pages, and the result is shown in the figure below:

But, when scrolling up and down, the page is not blank and a PDF is rendered.
Could be a refresh issue!
Please answer.