Redmine

I'm attaching the fix patch. In patch 0002, the selectors that receive --oc-blue-9 are switched from a.icon:link / a.icon:visited to plain a.icon.

If that change raises concerns, the issue can also be resolved by simply adding href="#" to the code block copy button as shown below.

diff --git a/app/assets/javascripts/application-legacy.js b/app/assets/javascripts/application-legacy.js
index 6bd315721..7bfddd1e1 100644
--- a/app/assets/javascripts/application-legacy.js
+++ b/app/assets/javascripts/application-legacy.js
@@ -689,6 +689,7 @@ function setupCopyButtonsToPreElements() {

     const copyButton = document.createElement("a");
     copyButton.title = rm.I18n.buttonCopy;
+    copyButton.href = "#";
     copyButton.classList.add("copy-pre-content-link", "icon-only");
     copyButton.append(createSVGIcon("copy-pre-content"));

Patch 0001 is just the commit that improves the CSS readability.

Committed the fix as part of #43280 in r24054 and r24055, and merged them into 6.1-stable branch in r24056. Thank you.