Basically, the issue is present in Android and UWP when some languages are used (Chinese, Thai, Arabic, etc) and not in iOS because the first two platforms we are using SkiaSharp to render the elements within the RadDataGrid. In iOS, on the other hand, we are creating native UILabels.
We have an issue logged in our Feedback portal and here is the link:
Also keep in mind that TemplateColumn does not support editing, as we're not aware of the content shown in it.
Please check the attached sample how the workaround is implemented.
I hope I was helpful.
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