Merge pull request #4274 from wenzhixin/fix/2201

Fixed loading screen with filtercontrol

src/extensions/filter-control/bootstrap-table-filter-control.js

@@ -623,6 +623,7 @@ $.BootstrapTable = class extends $.BootstrapTable {
           if (that.options.height) {
             UtilsFilterControl.fixHeaderCSS(that)
           }
+          this.$tableLoading.css('top', this.$header.outerHeight() + 1)
         })
         .on('column-switch.bs.table', () => {
           UtilsFilterControl.setValues(that)