Drawing support changed with each beta release of Big Sur that Omnis engineering was working with, but all these issues have been addressed in Omnis Studio 10.2 and developers should upgrade to this version. It is possible that there will be compatibility issues, including some drawing anomalies, when running the release version of Omnis Studio 10.2 on Big Sur. We released Omnis Studio 10.2 November 10, 2020, just before the official release of Big Sur. Omnis Studio 10.2 was released in December 2020 and is certified for use on the release version of macOS Big Sur. Omnis Studio 10.2 fully supports macOS 11 Big Sur. General Information General Information & Notes for Omnis Developers macOS Big Sur (version 11) support for Omnis Studio 10.2, 10.1.x and 8.1.x