The issue is not reproduced when loading integer type and can be reproduced only with long type. And this script error is from base source.
Please find the validation details.
Is this issue validated from component team? (Yes / No)?
Yes, the reported issue only reproduced when loaded the long type data.
Is this breaking issue?
Step by step issue replication procedure with clear description?
Run the provided sample
Open the popup
See the console window.
The script error throughs from base changetype method
Code snippet / issue reproducing sample?
Attached in the mail conversation
Actual Result/Expected Result (screen shot if needed)
Actual Result: script error occur
Expected Result: need to work without script error
Founded root case : we did not support Int64 data type values we have only given Int32 data types in deserialization process.