Datamapper - I must delete mapping twice to make it disappear

(Migrated from https://github.com/syndesisio/syndesis/issues/6176)

Author: Martin Stepanek
Assignees: Tomohisa Igarashi,

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

Steps to reproduce:
1. create a datamapper mapping
2. show mapping table in datamapper
3. select the mapping and click trash bin icon
4 click Remove button on Remove Mapping? dialog
nothing happens with the mapping
5. repeat 3 and 4
mapping deleted

!datamapper_delete