How to use UpgradeBehavior: uninstallPrevious?

[tommaier123]

I have switched from an installer created with a Visual Studio Setup Project to one created with Advanced installer. Both have the same upgrade code.
When running the manual UI installation the major upgrade works as expected.
I have set up a winget manifest for the new version but when I install through that it does not uninstall the old version.
This seems to be a problem caused by the installer running in reduced UI mode.
As a temporary workaround I want to use UpgradeBehavior: uninstallPrevious but the result is the same.
Am I using this incorrectly?
Here is my manifest

[tommaier123]

It works as expected. But when testing using a local manifest and winget install it does not upgrade the rpevious installation