Does not show any error message of validation in Master-Detail grid #835
Description
Bug Report
I have used a feature Master-Detail grid in edit mode cell. In the child grid, i created a required validation for one column. When i focused out a cell belong to that column with empty value, it showed an error border roundly, but it did not display an error message corresponding to required validation.
Package versions:
devexteme version: 22.2.5
devextreme-react version: 22.2.5
Steps to reproduce:
https://codesandbox.io/s/reverent-moon-e3k019?file=/src/GridParent.js
Current behavior:
Don't show an error required message
Expected behavior:
Display an error required message
Screenshots:
