dist

dist/css/bootstrap.css

@@ -3070,12 +3070,12 @@ tbody.collapse.show {
   border-bottom-left-radius: 0;
 }
 
-.btn + .dropdown-toggle-split {
+.dropdown-toggle-split {
   padding-right: 0.5625rem;
   padding-left: 0.5625rem;
 }
 
-.btn + .dropdown-toggle-split::after {
+.dropdown-toggle-split::after {
   margin-left: 0;
 }
 

dist/js/bootstrap.bundle.js

@@ -4148,7 +4148,14 @@ var Dropdown = function ($$$1) {
     };
 
     Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
-      if (!REGEXP_KEYDOWN.test(event.which) || /button/i.test(event.target.tagName) && event.which === SPACE_KEYCODE || /input|textarea/i.test(event.target.tagName)) {
+      // If not input/textarea:
+      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
+      // If input/textarea:
+      //  - If space key => not a dropdown command
+      //  - If key is other than escape
+      //    - If key is not up or down => not a dropdown command
+      //    - If trigger inside the menu => not a dropdown command
+      if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $$$1(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
         return;
       }
 

dist/js/bootstrap.js

@@ -1717,7 +1717,14 @@ var Dropdown = function ($$$1) {
     };
 
     Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
-      if (!REGEXP_KEYDOWN.test(event.which) || /button/i.test(event.target.tagName) && event.which === SPACE_KEYCODE || /input|textarea/i.test(event.target.tagName)) {
+      // If not input/textarea:
+      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
+      // If input/textarea:
+      //  - If space key => not a dropdown command
+      //  - If key is other than escape
+      //    - If key is not up or down => not a dropdown command
+      //    - If trigger inside the menu => not a dropdown command
+      if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $$$1(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
         return;
       }
 

js/dist/dropdown.js

@@ -340,7 +340,14 @@ var Dropdown = function ($) {
     };
 
     Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
-      if (!REGEXP_KEYDOWN.test(event.which) || /button/i.test(event.target.tagName) && event.which === SPACE_KEYCODE || /input|textarea/i.test(event.target.tagName)) {
+      // If not input/textarea:
+      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
+      // If input/textarea:
+      //  - If space key => not a dropdown command
+      //  - If key is other than escape
+      //    - If key is not up or down => not a dropdown command
+      //    - If trigger inside the menu => not a dropdown command
+      if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
         return;
       }