Prevent conflict b/w search field and its dropdown

Stop the global search form's default "action" from fighting with
dropdown items when using the keyboard to navigate the dropdown.
`e.preventDefault()` is now called on the enter key when a dropdown item
is already selected.

Signed-off-by: Rémy Coutable <remy@rymai.me>

1 files changed, 1 insertions, 0 deletions

diff --git a/app/assets/javascripts/gl_dropdown.js b/app/assets/javascripts/gl_dropdown.js
index d4403375643..e034ca68645 100644
--- a/app/assets/javascripts/gl_dropdown.js
+++ b/app/assets/javascripts/gl_dropdown.js
@@ -738,6 +738,7 @@
             return false;
           }
           if (currentKeyCode === 13 && currentIndex !== -1) {
+            e.preventDefault();
             _this.selectRowAtIndex();
           }
         };