Postby JS-Support @Userware » Mon Jun 15, 2015 9:05 am
Thanks a lot for the details bug report.
We are aware of this issue and are planning to fix it with the support of ControlTemplates in one of the upcoming beta updates. At the moment, the "Button" control can contain any visual child, but there is no notion of "HorizontalContentAlignment" and "VerticalContentAlignment". The content alignment is currently always "Stretch", which results in the text being top aligned as if it was in a stretched TextBlock.
Stay tuned.
Thanks again.
Regards,
JS-Support