The problem description:
I open the article to edit, click on some text, but the edit menu slowly pulls down in the meantime, and my click goes into that edit menu instead. The problem is particularly bad on Wiktionary, where articles are likely smaller, and on the busy systems where the menus load slower.
The proposed solution:
Make the space for the menu in the original document when it loads, so that no re-shaping will be taking place later.