allows merging a second time into the same observation

Error: page.waitForFunction: Test timeout of 90000ms exceeded.
at Object.ready (tests/fixtures/app.ts:167:16)
at Object.forEachTest (tests/fixtures/foreachtest.ts:131:16)

Test timeout of 90000ms exceeded while running "beforeEach" hook.
at tests/merging.spec.js:7:6