Prevent from the issue

Use Properties panel when editing name for Data Objects. It is not possible to input new line characters there.

If using Inline text editor, avoid using names with new line characters for Data Objects.

Fix the issue

If the process is already broken:

1. Find all occurrences of Data Object's names with empty lines and delete all these empty lines.
2. Save the changes, Close xml editor and open process back.

1. Create a Data Object
2. Double click on it to activate Inline text editor.
3. Input the name containing at least one new line.
4. Save the process.
5. Close and open process back.

Actual result

After saving, an unexpected system error occurs.
After closing and reopening the process back, the process is broken and xml editor is opened.

Expected result

If editing Data Object's name with text containing new line characters, just a warning message about invalid name is shown.
Once the process is reloaded/reopened, all new line characters are removed from Data Objects' names.
As a result, no unexpected errors occur, hence after reopening the process back, a process editor is opened instead of xml editor.