Created attachment 789164 [details]
Video of reproducing steps

Description of problem:
When editting KPI, which is using NVD3 as a chart renderer, the preview disappears and is not shown in the KPI editor window.

Version-Release number of selected0 component (if applicable):
BPMS 6.0.0.ER1, deployed on EAP 6.1.0

How reproducible:
Always

Steps to Reproduce:
Please see video of reproducing steps. For the test I use local file-based h2 database (attached) with username/password test

0. login using root user (please ignore the login screen - already reported issue with branding)
1. Configure External custom connection (JDBC based) using attached h2 database test.h2.db
2. Configure data provider based on this datasource (using "Select * from person;" as query
3. Add KPI panel to the page and configure it to use data provider from step 2


Actual results:
When you select different Domain / range (x/y axis - see 1:40 in the video) the KPI preview disappears and doesn't appear until you close the window.

Expected results:
The KPI preview should be displayed all the time when editting the KPI.

Additional info:

The database is created using the following DDL:

CREATE USER test PASSWORD 'test';
CREATE TABLE IF NOT EXISTS PERSON (ID INT PRIMARY KEY, NAME VARCHAR(30), AGE INT);
GRANT ALL ON PERSON TO test;
INSERT INTO PERSON (ID, NAME, AGE) VALUES (1, 'John Doe', 25);
INSERT INTO PERSON (ID, NAME, AGE) VALUES (2, 'Jane Doe', 20);
INSERT INTO PERSON (ID, NAME, AGE) VALUES (3, 'James Bond', 35);
INSERT INTO PERSON (ID, NAME, AGE) VALUES (4, 'Jim Blonde', 10);
INSERT INTO PERSON (ID, NAME, AGE) VALUES (5, 'Ludvig van Wokurka', 50);