Of course, maybe you are experiencing a different issue that also leaks memory, but Dan confirmed 1Password was not causing his problem, just 1Blocker. https://twitter.com/hondanhon/status/1329471604649205760?s=2...

The 1Blocker extension can be disabled as a temporary fix, and crucially, the ad blocking functionality does _not_ have to be disabled.

https://twitter.com/1blockerapp/status/1329744152150626304?s...

In the meantime, disabling the 1Blocker Button extension in Safari > Preferences > Extensions and restarting Safari fixes it. It won't affect how our app blocks intrusive content in Safari since 1Blocker Button only provides quick actions to the main app.