You might want to save and then revert your showthread template and see if that fixes things.
Also, you should not be bumping your thread. From the
Global Rules:
No "Bumping" (Your threads/posts): Please do not repeatedly bump your threads to try and get attention. Most members of the site are not online 24 hours a day and so will not see your post the instant it is made. Do not bump a thread within 24 hours, and not more than twice a week.