Confluence macro modal takes ~5-6 seconds to show up

Why should it take so long to load the macros window?? And there's no loading indicator, so the user is left wondering if they actually triggered the show macro action or not.

We're using confluence cloud and it takes 5-6 seconds for this modal to show up. This should really be fixed. At least show some sort of loading indicator so the user knows what's going on. 

Another user complained about this here: https://community.atlassian.com/t5/Confluence-questions/Re-Inline-code-blocks/qaq-p/644977/comment-id/86485#M86485