Steps to reproduce the issue

Went to apply patch (27601) to do the second test as Nicola had just successfully applied patch and tested successfully.
But for me the patch failed to apply with the message
Error
The patch could not be applied because it would break the site. Check the pull request to see if it is up to date

I had just fetched all as had Nicola so for him the patch applied (I was watching his screen in the PBF without P)
I went to do second test when this happened

Expected result

Patch installs

Actual result

Patch failed with
Error
The patch could not be applied because it would break the site. Check the pull request to see if it is up to date

System information (as much as possible)

Install the latest nightly
Joomla_4.0.0-beta1-dev-Development-Full_Package.zip
Add the J4 patch tester
Patch Tester 4.0.0 Release Candidate
GitHub Repo set to Joomla!CMS
Github Auth Method Token
PHP Version 7.3.16
Web Server Apache
WebServer to PHP Interface fpm-fcgi
10.1.44-MariaDB

Additional comments