update

dist/base.css

@@ -418,6 +418,10 @@
   background-color: #242640;
 }
 
+.bi-combo.bi-combo-popup {
+  display: block !important;
+  visibility: visible !important;
+}
 
 .bi-search-text-value-combo .trigger-icon-button {
   font-size: 16px;

dist/bundle.css

@@ -2270,6 +2270,10 @@ textarea {
   background-color: #242640;
 }
 
+.bi-combo.bi-combo-popup {
+  display: block !important;
+  visibility: visible !important;
+}
 
 .bi-search-text-value-combo .trigger-icon-button {
   font-size: 16px;

dist/fineui.css

@@ -2270,6 +2270,10 @@ textarea {
   background-color: #242640;
 }
 
+.bi-combo.bi-combo-popup {
+  display: block !important;
+  visibility: visible !important;
+}
 
 .bi-search-text-value-combo .trigger-icon-button {
   font-size: 16px;

src/css/base/combo/combo.css

@@ -85,6 +85,10 @@
   background-color: #242640;
 }
 
+.bi-combo.bi-combo-popup {
+  display: block !important;
+  visibility: visible !important;
+}
 
 .bi-search-text-value-combo .trigger-icon-button {
   font-size: 16px;

src/less/base/combo/combo.less

@@ -1,10 +1,10 @@
 @import "../../index";
 .bi-combo {
-  //&.bi-combo-popup {
-  //  display: block !important;
-  //  visibility: visible !important;
-  //  &:focus {
-  //    .box-shadow(0 0 5px 2px, @color-bi-blue-20);
-  //  }
-  //}
+  &.bi-combo-popup {
+    display: block !important;
+    visibility: visible !important;
+    //&:focus {
+    //  .box-shadow(0 0 5px 2px, @color-bi-blue-20);
+    //}
+  }
 }