I don't seem to have this issue using Chrome on W7? I type the first letter of my previously entered answer, it auto-fills in (field turns yellow) and click "Enter". Just did this on this very post before I edited it!!!
For those that are affected - I believe this is the website's attempt to block auto-fill-in type input (as would happen from your browser's saved password cache or from autonomous spambots, etc). Manually adding the space from your keyboard appears as valid manual user input, and obviously gets around this protection (the engine must omit trailing spaces in the answer?)
I agree it can be annoying ESPECIALLY when you've been posting here for years and the website randomly thinks you are a spambot based off some unknown criteria. Even when the auto-fill works - it's still annoying for regular posters to continually confirm they are human...
Maybe RME could lessen the frequency of spambot challenges for users with current RME Forum history. It's generally the new accounts / inactive accounts you need to be overly cautious with regarding spam.
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