tiny issue fix.

css/dropdown.scss

@@ -179,7 +179,6 @@ $listMaxHeight: 210px;
         left: -1px;
 
         &.slide-up {
-            top: auto;
             /*border-top-width: 1px;
             border-bottom-width: 0;*/
             transform-origin: bottom;

css/grid.scss

@@ -18,6 +18,7 @@
     & {
         --hover-bg-color: lightyellow;
         --link-fore-color: #1890ff;
+        --link-disabled-color: #d9d9d9;
         --header-border-color: #adaba9;
         --header-bg-color: #fafafa;
         --header-fore-color: #000;
@@ -280,6 +281,11 @@
 
                         >.dropdown-panel {
                             top: calc(var(--line-height) + 2px);
+
+                            &.slide-up {
+                                top: unset;
+                                bottom: calc(var(--line-height) + 2px);
+                            }
                         }
                     }
 
@@ -291,16 +297,25 @@
                         align-items: center;
                         position: relative;
 
-                        svg {
+                        >svg {
                             width: 16px;
                             height: 16px;
                             fill: var(--link-fore-color);
                             transition: opacity .12s ease;
                         }
 
-                        &:hover svg {
+                        &:hover>svg {
                             opacity: .4;
                         }
+
+                        &.disabled {
+                            cursor: unset;
+
+                            >svg {
+                                fill: var(--header-border-color);
+                                opacity: unset;
+                            }
+                        }
                     }
                 }
             }

css/tooltip.scss

@@ -9,12 +9,12 @@
 }
 
 .tooltip-wrapper {
-    position: absolute;
+    position: fixed;
     word-wrap: break-word;
     height: auto;
     text-align: left;
     z-index: 250;
-    min-width: 75px;
+    min-width: 45px;
     max-width: 480px;
     min-height: 32px;
     border-radius: 2px;