After upgrading from EPiServer.Cms 12.5.0 to 12.9.0 I can no longer scroll up when viewing a page inside edit mode to reveal PageHeader.
I just upgraded my allow demo to 12.9.0 and the scroll up to reveal page header is working for me.
I am missing a few packages for hosting and DXP, this is my Alloy demo config, it would be strange for those other packages I would think to affect that tho.
<PackageReference Include="EPiServer.CMS" Version="12.9.0" />
<PackageReference Include="EPiServer.Find.Cms" Version="14.1.0" />
<PackageReference Include="Wangkanai.Detection" Version="5.2.0" />
Have you tried fully clearing all cache etc etc just in case there's been any chance in the JS that's caching?
You might be right. I tried clearing cache, I can now trigger the toggle of pageheader "somethings". I have only tired this so fare in my dev env.
Cache doesn't seem to be the issue, since I still have the error.
Are there any errors in the console window?.