If more bugs appear probably better to go back to the main thread and process dual-pages every time a page is shown as it did before (cherry picked from commit fe373a95a2a6eaf9792a28b4f2b4f394ae40fba4)
If more bugs appear probably better to go back to the main thread and process dual-pages every time a page is shown as it did before (cherry picked from commit fe373a95a2a6eaf9792a28b4f2b4f394ae40fba4)