Google wants to make it easier for the curious to try out some experiments. Google has been hiding experimental features behind Chrome: // flags for ages. Now you want to advertise some of the things prominently in order to receive feedback. In concrete terms, you can now see this in the Canary version of the browser, which has an additional icon in the menu bar. Behind it are selected flags that can be activated quickly – including the option to send feedback on this to Google. This can be used from the Canary version released on March 5th. If the whole thing is not displayed on you, then you have to add it again by hand and activate chrome: // flags / # chrome-labs. Google is currently testing the reading list, tab search and side tab scrolling.
Waiting a day might work ? but you can also try force-enabling it with this flag: chrome://flags/ chrome-labs
— Alex Ainslie (@alexainslie) March 5, 2021