I should have mentioned - in my profile I have 'When editing text' set to 'Use standard web forms'. So it can't be the HTML editor.
Since you are certain this has nothing to do with the 'Big Arrow', I have started a new thread in the "Forum module" forum: http://moodle.org/mod/forum/discuss.php?d=208224.
Appreciate responses from the community.
General developer forum
2.3 - Is that Big Arrow here to stay?
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