Fix offset for fixed nav

app/assets/javascripts/lib/utils/common_utils.js

@@ -86,18 +86,25 @@
       // This is required to handle non-unicode characters in hash
       hash = decodeURIComponent(hash);
 
+      var fixedTabs = document.querySelector('.js-tabs-affix');
+      var fixedNav = document.querySelector('.navbar-gitlab');
+
+      var adjustment = 0;
+      if (fixedNav) adjustment -= fixedNav.offsetHeight;
+
       // scroll to user-generated markdown anchor if we cannot find a match
       if (document.getElementById(hash) === null) {
         var target = document.getElementById('user-content-' + hash);
         if (target && target.scrollIntoView) {
           target.scrollIntoView(true);
+          window.scrollBy(0, adjustment);
         }
       } else {
         // only adjust for fixedTabs when not targeting user-generated content
-        var fixedTabs = document.querySelector('.js-tabs-affix');
         if (fixedTabs) {
-          window.scrollBy(0, -fixedTabs.offsetHeight);
+          adjustment -= fixedTabs.offsetHeight;
         }
+        window.scrollBy(0, adjustment);
       }
     };
 

app/assets/javascripts/merge_request_tabs.js

@@ -155,7 +155,10 @@ import BlobForkSuggestion from './blob/blob_fork_suggestion';
 
     scrollToElement(container) {
       if (location.hash) {
-        const offset = -$('.js-tabs-affix').outerHeight();
+        const offset = 0 - (
+          $('.navbar-gitlab').outerHeight() +
+          $('.js-tabs-affix').outerHeight()
+        );
         const $el = $(`${container} ${location.hash}:not(.match)`);
         if ($el.length) {
           $.scrollTo($el[0], { offset });
@@ -301,6 +304,7 @@ import BlobForkSuggestion from './blob/blob_fork_suggestion';
               forceShow: true,
             });
             anchor[0].scrollIntoView();
+            window.gl.utils.handleLocationHash();
             // We have multiple elements on the page with `#note_xxx`
             // (discussion and diff tabs) and `:target` only applies to the first
             anchor.addClass('target');