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Hanif Koh
d5165c3e75
The wizard's loading page waits for HandleStudio to be called with userguide_profile_load_finish and jumps to its target page on it; if the call never arrives, a fallback timer in the page jumps after 180 s. GuideFrame started the profile load from the first wxEVT_WEBVIEW_NAVIGATED event and ran HandleStudio in the page as soon as the data was ready. That event is the navigation's commit, before the page's scripts have run, and with the wizard's derived cache the data is ready about 100 ms later. Since the web view is created with an empty URL so the translated strings can be injected before the first load, the first navigated event is the commit of about:blank, so the data is ready before the real page has even begun loading and the call reaches a page without HandleStudio. WebKit drops the error and nothing retries, so on macOS the wizard often sits on "Loading..." for three minutes before the printer list appears. The loading page now reports in from its OnInit, the way the other wizard pages request what they need, and the host sends the message once both the data is ready and the page has reported; every instance of the page reports again, so one that replaced an earlier one gets its own message.