Text with empty attribute value display special character in A~

if we want to use an attribute to display in text which is empty at first its displaying a special character with A~(Attached the image). i don't want to use the format string for Empty value replacement because formatstring widget needs object refresh if the value of attribute changes

if i inspect element it displays like <span class="mx-text mx-name-txt_BuildingName" data-mendix-id="323_1_170_326" widgetid="mxui_widget_Wrapper_85" id="mxui_widget_Wrapper_85" style="overflow-wrap: break-word;line-height: 16px;">Â&nbsp;</span>