Symptoms
In their development environment, number field values from SharePoint lists are not correctly read to SmartObjects.
e.g.
2,535 in SmartObject: 2535 (correct)
0.17 in SmartObject: 17 (not correct)
Server language is English, but the Region Settings were set to German.
Diagnoses
This could happen when the regional settings differ from server to server [SQL and K2 server or SharePoint and SQL and K2 server]
Resolution
Client Changed the Regional settings for K2 Service account to be the same as the all applicable servers.
The Correct values are now being shown.