I've just noticed that, since moodle.org has been using version 1.8, when posting forum messages, the cursor is automatically positioned in the Subject field.
This is fine when you are posting a new discussion topic, since it makes it clear that you have to type a Subject for your message before proceeding to typing the text of your message.
However, when you are replying to a discussion topic, that automatic positioning is not a good thing. Normally you do not want to change the Subject of that discussion, you JUST want to type your Message text immediately. Before I noticed this new behavior (1.8 version), I did not understand why, after clicking in the HTML editor and starting to type the text of my reply message, after I had typed a few letters or words, the cusor unexpectedly moved to the Subject field and I was now typing the rest of my message in that field.
Have you noticed this? Does it bother you too? If so, you can vote for bug report MDL-8882.
Joseph