Resize Problem in WPF Grid since 127.3.50

[oetjen]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

129.0.110

Operating System

Windows 11

Architecture

x64

.Net Version

.NET Framework 4.8

Implementation

WPF

Reproduction Steps

Create a WPF Window with a Grid, add several ChromiumWebBrowsers into each grid.
Load some simple HTML content into each browser.
Start App and resize the window
-> WebBrowser is not resized according to the window / grid size changes
-> When using the mouse scroll wheel, the browser size is updated correctly.
This behaviour is observed first in 127.3.50. In 126.2.180.0, everything was ok

The following project contains some sample code, as well as a video:
See: https://github.com/oetjen/ChromiumResizeProblem

Expected behavior

As in 126.2.180.0 -> Browser windows should resize

Actual behavior

Browser windows do not resize

Regression?

Worked in 126.2.180.0

Known Workarounds

none

Does this problem also occur in the CEF Sample Application

No

Other information

No response

[jpmikkers]

I also see wpf ChromiumWebBrowser resizing issues in my demo app for Baksteen.Blazor.CefSharp, .net 8.0. When enlarging the window the webview seems to automatically resize up to a certain size, but then it stops, and it will only suddenly resize when I start hovering the mouse over elements in the webview.
I've tested this issue occurs both in 128.4.90 and 129.0.110.

Screenrecording:
https://github.com/user-attachments/assets/ad6ec647-095e-48ff-badf-ee96e41cf2e7