[Problem/Bug]: ShowPrintUI(); top of page is missing if page has been scrolled before printing

[gudmundurtor]

What happened?

1. Scroll page down
2. Call ShowPrintUI();
3. Top of page is missing

Tested with save as pdf.

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

No response

SDK Version

1.0.2478.35

Framework

WPF

Operating System

Windows 11

OS Version

22631.3737

Repro steps

1. Scroll page down
2. ShowPrintUI();
3. Top of page is missing

Tested with save as pdf.
Can be reproduced using WebView2WpfBrowser sample

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#52085240

[ajtruckle]

I also confirm this behaviour. Only today did I update my WebView 2:

• Runtime: 126.0.2592.68
• SDK: 2592.51

I have just downgraded WV2 NuGet package and tried again (SDK 2535.41). Same behaviour.

This is a critical bug IMHO.
@champnic

[ajtruckle]

It also happens if you directly save as PDF without showing the UI. The output is still cropped.

[victorhuangwq]

@ajtruckle do you have a version number where it was last working?

[ajtruckle]

@victorhuangwq Sadly, I do not. But my WV2 sample I have downloaded is an older one (SDK 1671.0) and just navigated to a website, scrolled down and go to print. Boom … same issue. So, it is either:

• been in WV2 a very long time and only just noticed.
• never worked in WV2.
• caused by the runtime (this I can't test).

Look:

I actually think that Edge is not behaving either. If I scroll both to top:

[champnic]

I suspect a regression in the runtime. Adding the bug to our backlog.