There's loads of console warnings/errors that make reading through the test suite annoying and difficult to find real test errors, especially on CI.

This error is common:

Warning: An update to observerComponent inside a test was not wrapped in act(...).

These errors should be dealt with as advised by the message.

Another log that's typical is a console log we're choosing to call, in which case the tests should be calling expectations, etc. in a block so that the actual log isn't visible when running the tests.