If you type a value in a Date cell of the OutSystems Grid then tab out of the cell, the date value reverts to its previous value. It should save the value you typed into the cell instead.

It works fine if you press "Enter" instead of "Tab" (but moves down to the next line).

It also works fine if you use the mouse to select the date instead of typing.

The Date column in the sample grid has this behaviour:

https://outsystemsui.outsystems.com/DataGridSample/