Power Bi Report Server does not load language file from Visual Studio initially

Hi PBI experts,

besides PBI Desktop, we use Microsoft Visual Studio for designing and altering Tabular Models. There you can easily export a language file, then edit it with a text editor and then import the language file. In Power BI Desktop the language of the user's system is selected automatically. Last month, we have installed the PBI report server. We still have a issue with the language file loading in a internet browser. When opening the report via an internet browser, the language file from Visual Studio is not loaded initially. Only, after refreshing the browser (F5) the language file will be selected an the report is translated (similar like in PBI Desktop). Even after logging out and again logging in, the language file will be loaded. Do you have an idea why this happens and how I can fix it?

Best regards

Ömer S.