update

app/filtering.js

@@ -433,24 +433,24 @@ function registerPermissionHandler (session, partition) {
     let tempSettings
     if (requestingUrl === appUrlUtil.getBraveExtIndexHTML() || isPDFOrigin || isBraveOrigin) {
       // lookup, display and store site settings by the origin alias
-      mainFrameOrigin = isPDFOrigin ? 'PDF Viewer' : 'Brave Browser'
+      requestingUrl = isPDFOrigin ? 'PDF Viewer' : 'Brave Browser'
       // display on all tabs
-      requestingUrl = null
+      mainFrameOrigin = null
       // Lookup by exact host pattern match since 'Brave Browser' is not
       // a parseable URL
-      settings = siteSettings.getSiteSettingsForHostPattern(appState.get('siteSettings'), mainFrameOrigin)
-      tempSettings = siteSettings.getSiteSettingsForHostPattern(appState.get('temporarySiteSettings'), mainFrameOrigin)
+      settings = siteSettings.getSiteSettingsForHostPattern(appState.get('siteSettings'), requestingUrl)
+      tempSettings = siteSettings.getSiteSettingsForHostPattern(appState.get('temporarySiteSettings'), requestingUrl)
     } else if (requestingUrl.startsWith('magnet:')) {
       // Show "Allow magnet URL to open an external application?", instead of
       // "Allow null to open an external application?"
       // This covers an edge case where you open a magnet link tab, then disable Torrent Viewer
       // and restart Brave. I don't think it needs localization. See 'Brave Browser' above.
-      mainFrameOrigin = 'Magnet URL'
+      requestingUrl = 'Magnet URL'
     } else {
       // Strip trailing slash
-      mainFrameOrigin = getOrigin(mainFrameOrigin)
-      settings = siteSettings.getSiteSettingsForURL(appState.get('siteSettings'), mainFrameOrigin)
-      tempSettings = siteSettings.getSiteSettingsForURL(appState.get('temporarySiteSettings'), mainFrameOrigin)
+      requestingUrl = getOrigin(requestingUrl)
+      settings = siteSettings.getSiteSettingsForURL(appState.get('siteSettings'), requestingUrl)
+      tempSettings = siteSettings.getSiteSettingsForURL(appState.get('temporarySiteSettings'), requestingUrl)
     }
 
     let response = []