Boundary error event causes broken process when the language of operating system, where business central is running, is set to Czech.

After saving process, unexpected error occurs. See BoundaryErrorEventUnexpectedError.txt file in the attachment.

Once, the process is closed and opened back, the message bellow is displayed and xml instead of process is opened:
"An error was produced during process diagram parsing. There might be bpm nodes not yet supported by current Process Designer version, or the xml content can contain errors. You can try to open the file with the Legacy Process Designer or repair it manually."

You can find broken process in the attachment.

In the broken process, there is attribute in boundaryEvent element: drools:dockerinfo="-2,0^74,0|". The value should contain dots instead of commas, what probably causes the issue.