[After Build] - Webview dont load / show webpage

[NiTRoeSE]

Hello,

webview is working fine as long you not build the app.
After building the app for macos or windows, webview shows only a blank page.
I have tested this with macos and windows respectively with flet 0.27.x and 0.28.x the result is the same.

If you use some of the functions like:
on_page_ended
on_page_started
on_progress
on_url_change

You can see that the page is loaded (on_page_started) but immediately start loading again and again and again... at some point it gets stuck and slow.

This all only happens with a builded app created with flet build.

First i thought its a problem with new flutter which came with 0.28.2 but it isnt problem also occurs with older versions of flet and flutter.
Hope there is a fix or workaround

Thanks in advanced!