Thank you Andrey for the latest SS 0.99.6877. However, I observe a problem in integrating a user defined function with units. The attached SS document (and all similar docs) worked fine in all previous SS versions without any issue.
Thank you! For some reason I had no automated test with such example (integral with units) and that is why I didn't catch this error before the latest beta release. Will add example to tests and make a fix asap. Thanks for the report!