Heavy financial SPAs freeze CDP screenshots; extension site-permission resets per tab

Two browser-automation gotchas from driving a bank web app. (1) Some heavy single-page apps (e.g. a bank account-activity/transactions view) reliably time out Page.captureScreenshot / freeze the renderer, even though navigation and clicks succeed and simpler pages on the SAME domain (the account summary) capture fine. Retrying and longer waits do not help; the pragmatic move is to hand that specific capture to the user rather than burn calls. (2) A Chrome extensions per-site access permission can reset when you close and reopen a tab or the tab-group changes mid-task you then get permission denied for this action on this domain until the user re-grants site access, even though it worked earlier in the same session.