OnePlus last updated its premium 8T smartphone on December 29, 2020. However, this version of OxygenOS caused a strange issue in which videos on the device would pause out of nowhere. The OEM has just re-releaased the same update to address this, leaving it otherwise unchanged.
https://www.notebookcheck.net/OnePlus-issues-a-fix-for-the-8T-s-new-video-stalling-issue.513950.0.html