I just tried to post a (certainly not too long) comment but as I tried to submit it, the number of characters left turned negative and red and the submission failed:

Why does this happen to me? Control C, delete the comment, and reinsert it with Control V did not change anything. And I am logged in of course.

Edit The "number of characters left" was negative (-15) from the beginning before any character was typed into the comment ...

• The first thing to do on weird behavior is to try clearing your browser caches and deactivating any userscripts you may have running. If the problem persists you should certainly complain on meta, but it would help to know what browser and OS you are using. – dmckee Mar 29 '12 at 15:22
• @dmckee Im using Windows XP and Firefox ... – Dilaton Mar 29 '12 at 15:54
• Is this still an issue or has it corrected itself at some point? – Adam Lear Apr 2 '12 at 3:06
• @AnnaLear: At the moment my comments on the main page work (again), maybe it has correcte itself (or Manishearth has helped with this?) – Dilaton Apr 2 '12 at 10:18
• @Dilaton Okay, cool. I haven't been able to replicate it myself, so I'm gonna mark it as not reproduced. But if it turns up again, let me know. – Adam Lear Apr 3 '12 at 1:32
• @Dilaton: Nope, I didn't.. Sorry about the script, I tried and couldn't manage (didn't have much time and SE jQuery is obfuscated). I'll try later if it crops up again. – Manishearth Apr 3 '12 at 9:14
• If it's a url, you can always use tinyurl.com, ad.ly, or bit.ly. – Abhimanyu Pallavi Sudhir Aug 4 '13 at 13:28