Is the problem on sites where the images zoom within the page? I tried to fix that bug with the version 1.5.2 update. However, I only had one badly behaved site to test on. Could you send me the new problem site(s) at jscher2000@outlook.com or mention them in a new comment under the following issue: https://github.com/jscher2000/Save-webP-as-extension/issues/10

Or maybe it's a new scenario. Any leads would be helpful. Thanks.