This issue needs to be tested in one iOS and one Android mobile device and in one tablet. In the app, login in a site that has at least 1 SCORM, 1 IMSCP (e.g. MM Dev course) and 1 H5P activity with tracking enabled (e.g. H5P reports course). Put the device in portrait mode. Open the H5P. Check that you see a fullscreen button (a square-like button) in the header. Click the full screen button. Check that the iframe becomes full screen. Leave full screen and rotate the device to put it in landscape. Check that the iframe becomes full screen automatically. While in fullscreen, click the kebab button (3 dots) and click "View my attempts". Check that the app leaves full screen and opens your attempts. Repeat steps 3-5 with the IMSCP and SCORM.