Create PR for Upstream not working for ADO #2235

This used to work in 2026.06

I have develop branch checked out and want to create a PR for the other branch I worked on.

2026.06 (works)

https://dev.azure.com/TFS-GLO-SomeCompany/PMS/_git/SomeCompany.Infrastructure/pullrequestcreate?sourceRef=S73711/FacturX-Action-Group&targetRef=master&sourceRepositoryId=c648b68f-084e-45da-9c7c-6a53a53217fb&targetRepositoryId=c648b68f-084e-45da-9c7c-6a53a53217fb

2026.07 (just a blank browser screen)

https://TFS-GLO-SomeCompany@dev.azure.com/TFS-GLO-SomeCompany/PMS/_git/SomeCompany.Infrastructure/pullrequestcreate?sourceRef=S73711%2fFacturX-Action-Group

The repo url is https://TFS-GLO-SomeCompany@dev.azure.com/TFS-GLO-SomeCompany/PMS/_git/SomeCompany.Infrastructure