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A subforum with no last post.

On March 13, 2017, the table cell reporting the last post in the subforum Developing Scratch Extensions forum's went blank. This was just the start of over 50 reports in the span of about a year.[1]


Just under a month after the first report, with 7 reports already, one Scratcher and Scratch Team member Paddle2See theorised that the main cause of this bug was posts indentified as commercial spam that were moved to the Dustbin forum.[2] This was occasionally the last post in the forum, and as a result, the last post section was left blank.


On May 18, 2017, the Scratch Team made some unknown changes to the filter system, and after that, all occurrences of the bug suddenly disappeared. No explanation was given. However, the bug eventually reappeared.


On August 21, 2017, the bug reappeared in the Open Source Projects forum.

This also happened on:



  1. Over 50 posts reporting this bug were made in topic:244285
  3. topic:420395