OnePlus has released OxygenOS Open Beta 18 for the OnePlus 7 and OnePlus 7 Pro, which bump up the Android security patch level on both smartphones to September 2020. OnePlus 7 Pro Additionally, the new build squashes bugs related to the screen recorder and notification bar and adds new features to Game Space. You can check out the full changelog of OxygenOS Open Beta 18 below for more details: System Fixed the known issues with screen recorder. Fixed the issue that the notification bar did not respond occasionally. Updated Android security patch...
Source: https://www.gsmarena.com/oneplus_7_7_pro_oxygenos_open_beta_18_update-news-45306.php
