@Hainish, can you have a look at this? It's almost impossible to merge any PR because the tests are failing way too often.

Hey @bcyphers can you look at this? Thanks.

@Giltyhub it's not clear to me how this will address #15239. I don't think SEL_DEFAULT_WAIT_TIMEOUT is relevant to anything in the driver.get(...); driver.current_url.startswith(...) sequence -- am I missing something?

@bcyphers I agree that this might not address #15239, as this PR was drafted in attempt to resolve the issues with the TestPopup.test_rule_shown (as shown in #15411)

Ah ok. I still think this is fine to merge, but it might help more to add some retries on failure for parts of the code that seem to break a lot. We have had similar issues with Privacy Badger; see e.g. EFForg/privacybadger#1894