Hi Bartosz,
Sorry for the inconveniences caused.
We confirm the reported issue as breaking after our latest weekly patch release 17.1.42 which will be fixed and included in our upcoming weekly patch release expected to be rolled out on April 30, 2019. We would appreciate your valuable patience until then.
In the meantime kindly use the following CDN link of our older version ej.min.js file.
Please let us know if you face any issue.
Regards,
Nevitha