Predefined value of date field is strange

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP SP6, 7.0.0 DXP FP45, 7.0.X
• Fix Version/s: 7.0.X, 7.1.0 Beta 1
• Component/s: Dynamic Data Lists, Dynamic Data Mapping
• Labels:
  • ee-7.0.x-only
• Story Points: 1
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay/liferay-portal-ee/pull/6785

Steps to Reproduce:

1. Go to Product Menu > Content > DDL > Manage Data Definitions.
2. Click on add new Data Definition, add any name.
3. Add date field.
4. Set Predefined Value of the field and save.

Expected result:
There should be date value in Predefined Value field.

Actual result:
There is a number "0" in Predefined Value field.

Note: This issue can only reproduced in 7.0.x-private and DXP.