Power BI Service shows different Indicator font in KPI visual rather than in Desktop

Hi folks,

I somehow came accross this odd begaviour when KPI visual font in Desktop and Service are different. See picture below. The upper picture is from Desktop, the lower - from Service.

Well, I am using custom theme like this below, but should this affect visual different representation in Service?

{
   "name":"gvTheme",
   "background":"#E6E6E6",
   "foreground":"#344D90",
   "dataColors":[ "#E7552C", "#6096ba", "#ffb745" ],
   "visualStyles":{
      "*":{
         "*":{
            "*":[
               {
                  "fontSize":10,
                  "fontFamily":"Calibri, Cambria",				  
                  "color":{
                     "solid":{

                     }
                  }
               }
            ]
         }
      }
   }
}