fixed select2 paddings/margins

build/scss/plugins/_select2.scss

@@ -16,7 +16,7 @@
   .select2-selection--single {
     border: $input-border-width solid $input-border-color;
     //border-radius: $input-radius;
-    padding: 6px 12px;
+    padding:  ($input-padding-y * 1.25) $input-padding-y;
     height: $input-height;
   }
 
@@ -141,23 +141,13 @@
           }
         }
       }
-    }
 
-    &.select2-container--focus .select2-selection--multiple {
-      border-color: $input-focus-border-color;
-
-      .select2-search__field {
-        border: 0;
-      }
-    }
-  }
-
-  .select2-selection--multiple {
       .select2-selection__choice {
         background-color: $primary;
         border-color: darken($primary, 5%);
         color: color-yiq($primary);
         padding: 0 10px;
+        margin-top: .31rem;
       }
 
       .select2-selection__choice__remove {
@@ -170,6 +160,28 @@
           color: $white;
         }
       }
+
+      .text-sm &,
+      &.text-sm {
+        .select2-search.select2-search--inline {
+          .select2-search__field {
+            margin-top: 8px;
+          }
+        }
+
+        .select2-selection__choice {
+          margin-top: .4rem;
+        }
+      }
+    }
+
+    &.select2-container--focus .select2-selection--multiple {
+      border-color: $input-focus-border-color;
+
+      .select2-search__field {
+        border: 0;
+      }
+    }
   }
 
   & .select2-selection--single .select2-selection__rendered li {

dist/css/adminlte.css

@@ -19842,7 +19842,7 @@ html.maximized-card {
 
 .select2-container--default .select2-selection--single {
   border: 1px solid #ced4da;
-  padding: 6px 12px;
+  padding: 0.46875rem 0.375rem;
   height: calc(2.25rem + 2px);
 }
 
@@ -19950,19 +19950,12 @@ html.maximized-card {
   margin-top: 6px;
 }
 
-.select2-container--default.select2-container--focus .select2-selection--multiple {
-  border-color: #80bdff;
-}
-
-.select2-container--default.select2-container--focus .select2-selection--multiple .select2-search__field {
-  border: 0;
-}
-
 .select2-container--default .select2-selection--multiple .select2-selection__choice {
   background-color: #007bff;
   border-color: #006fe6;
   color: #ffffff;
   padding: 0 10px;
+  margin-top: .31rem;
 }
 
 .select2-container--default .select2-selection--multiple .select2-selection__choice__remove {
@@ -19976,6 +19969,22 @@ html.maximized-card {
   color: #ffffff;
 }
 
+.text-sm .select2-container--default .select2-selection--multiple .select2-search.select2-search--inline .select2-search__field, .select2-container--default .select2-selection--multiple.text-sm .select2-search.select2-search--inline .select2-search__field {
+  margin-top: 8px;
+}
+
+.text-sm .select2-container--default .select2-selection--multiple .select2-selection__choice, .select2-container--default .select2-selection--multiple.text-sm .select2-selection__choice {
+  margin-top: .4rem;
+}
+
+.select2-container--default.select2-container--focus .select2-selection--multiple {
+  border-color: #80bdff;
+}
+
+.select2-container--default.select2-container--focus .select2-selection--multiple .select2-search__field {
+  border: 0;
+}
+
 .select2-container--default .select2-selection--single .select2-selection__rendered li {
   padding-right: 10px;
 }