endorphin why these problems didn’t manifest in the preview site?
The preview site can’t easily be used to check out our normal day to day activities. But it works fine for specific tests which will mostly be geared around testing the new features. The problems that have been found are mostly with existing features that unexpectedly became broken and there’s no easy way to predict what might break because the preview site intentionally doesn’t share the live message base.
That doesn’t make the preview site worthless – it works for its intended purpose. But probably a further short test phase is needed, using the new software and the full live message base, between preview testing and release.
See https://preview.community.giffgaff.com/d/85-test-stage-beyond-preview-needed for a partial explanation.