fix: use btn instead of icon

public/src/admin/dashboard.js

@@ -565,7 +565,7 @@ define('admin/dashboard', [
 	function setupFullscreen() {
 		const container = document.getElementById('analytics-panel');
 		const $container = $(container);
-		const btn = $container.find('.fa-expand');
+		const btn = $container.find('#expand-analytics');
 		let fsMethod;
 		let exitMethod;
 
@@ -584,7 +584,6 @@ define('admin/dashboard', [
 		}
 
 		if (fsMethod) {
-			btn.addClass('active');
 			btn.on('click', function () {
 				if ($container.hasClass('fullscreen')) {
 					document[exitMethod]();

src/views/admin/partials/dashboard/graph.tpl

@@ -5,7 +5,7 @@
 
 			<div class="d-flex gap-1">
 				<a class="btn btn-sm btn-light lh-sm" target="_blank" id="view-as-json" href="{config.relative_path}/api/v3/admin/analytics/{set}?type=hourly"><i class="fa fa-fw fa-xs fa-terminal text-primary"></i></a>
-				<a class="btn btn-sm btn-light lh-sm" href="#"><i class="fa fa-fw fa-xs fa-expand text-primary"></i></a>
+				<a class="btn btn-sm btn-light lh-sm" id="expand-analytics" href="#"><i class="fa fa-fw fa-xs fa-expand text-primary"></i></a>
 			</div>
 		</div>
 	</div>