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Get “You can only comment every 15 seconds” error erronously
Really Long Comment Wait Time?

When posting a comment that is less than the minimum length, one can bypass the initial 'x to go...' validation by typing spaces, but clicking 'Add Comment' causes an orange error message to display stating that the comment isn't long enough (as a result of the server trimming the input and checking the length again). After receiving this 'too-short' error, if one corrects the length of the comment and tries clicking 'Add Comment' again they receive the rate-limiting 'You must wait 15 seconds to post another comment. Timer reset.' message.

The rate-limit error applied as a result of this bug applies to all questions, not just the one you are currently commenting on. The rate-limiting mechanism is incorrectly assuming that the submitted comment was successfully added even though server-side validation prevented it.

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Fixed; see meta.stackoverflow.com/questions/103037/… –  Matthew Read Nov 22 '11 at 5:05
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marked as duplicate by Brandon, Lance Roberts, Michael Mrozek, waiwai933, Jeff Atwood Nov 11 '10 at 6:27

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1 Answer

This is the worst bug in Stack Overflow, by design.

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How silly... :| –  Nathan Taylor Nov 12 '10 at 1:06
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Rate limiting is by design. However, the OP is only trying to post one comment. Preventing a solitary comment from being posted isn't the intended behavior, it's a side-effect of the rate limiting being applied when it shouldn't be. See meta.stackoverflow.com/questions/103037/… –  Matthew Read Aug 18 '11 at 21:07
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