message: Set UseLayoutRounding to false for gap button for + sign to be stricly centered (win)
diff: <Setter Property="Template">
  <Setter.Value>
  <ControlTemplate TargetType="{x:Type Button}">
  - <Grid>
  + <Grid UseLayoutRounding="False">
  <Rectangle Stroke="{DynamicResource Toggl.LightGrayBrush}"
  StrokeDashArray="1 1"
  StrokeThickness="2"
  