Normally we open a page for all the tests e.g: await newDesktopBrowserPage(); is in a before all block and not in a beforeEach block. Was there any special reason for this difference? Can the newDesktopBrowserPage call be in a beforeAll block?

Probably not but I'll double-check.

Ah, scratch that; we need an empty post for each test. If we use beforeAll we don't have a clean slate that we need to know how many blocks are there.

Our tests in the past use beforeAll possibly for speed? The globals in the tests are kinda weird... anyway, this needs a fresh state for each test so beforeEach it is...

But if we use newDesktopBrowserPage in beforeAll and newPost in beforeEach don't we get a fresh state on each test? We will just reuse the same tab but we start with an empty post on each test.

I tried that out locally and it seemed to hang. I'll give it another go though, I just realised my environment could have been messed up locally from an unstashed, unrelated change.