fixed bootstrap-slider tooltip not shown

build/scss/plugins/_bootstrap-slider.scss

@@ -2,6 +2,11 @@
 // Plugin: Bootstrap Slider
 //
 
+// Tooltip fix
+.slider .tooltip.in {
+  opacity: $tooltip-opacity;
+}
+
 // Style override
 .slider {
   &.slider-vertical {

dist/css/adminlte.css

@@ -21297,6 +21297,10 @@ html.maximized-card {
   border-color: #6d7a86;
 }
 
+.slider .tooltip.in {
+  opacity: 0.9;
+}
+
 .slider.slider-vertical {
   height: 100%;
 }