Right to left flow direction completely breaks the RadDataGrid on Android and on iOS it doesn't seem to do anything.

Repro steps:

Android:

1. Download project from github: Kbperri/RadDataGridBug
2. Run the app on an Android device
3. See that the DataGrid is showing up
4. Click the "Click me" button which sets the FlowDirection
5. See that the DataGrid disappears
6. Click the button again and it appears again

iOS:

1. Download project from github: Kbperri/RadDataGridBug
2. Run the app on an iOS device
3. See that the DataGrid is showing up
4. Click the "Click me" button which sets the FlowDirection
5. See that the DataGrid doesn't change direction

If you test this on Windows, the FlowDirection is being appropriately applied.

Android LTR:

RTL: