[Datamapper] Transformation's delimiter not saved

(Migrated from https://github.com/syndesisio/syndesis/issues/4874)

Author: Andrej Vaňo
Assignees: unassigned

This is a...

[pre][code]
[ ] Feature request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[X] Bug report [!-- Please search GitHub for a similar issue or PR before submitting --]
[ ] Documentation issue or request
[/code][/pre]

Description

Integration sql -> datamapper -> amq

``

1. open datamapper
2. map from one field to another
3. add source transformation
4. select concatenate
5. insert delimiter ,
6. click done
7. reopen datamapper to check the delimiter
8. comma isn't there
9. (bonus) there are now 2 concatenate transformations with empty delimiters, writing into one mirrors the input in the second

`

h2. Workaround
Press 

[Tab]` key after step 5, so that the focus gets out from input field. Then delimiter is properly saved.