Hi Brian,
Greetings from Syncfusion.
Query: Gird grouped Column HeaderTextAlign property dosen't work.
We have validated your query with the provided sample and we are able to reproduce the reported problem(HeaderTextAlign property is not working properly with stacked header) at our end. The fix for the issue has been fixed internally and it will be included in our upcoming Volume 2 release which is expected to be rolled out in the first week of July, 2020.
Until then we appreciate your patience.
Regards,
Rahul