Can anyone explain in detail how AdBlock would affect a website under test? My mentor advises disabling it before web testing, but I don’t understand why I would need to disable AdBlock.
Adblocker prevents some website traffic from reaching you. Therefore, the behavior of the website you are testing may be different from if you were testing the website without adblocker. If you wanted to test something as a user who was seeing the website for the first time, you should test it in incognito/private browsing mode without any extensions.