Setup Login as a user that can create or modify a course. Click the user icon in the top right corner, and in the drop down menu go to Preferences In the Editor preferences change the Text editor to "Plain text area" Test Instructions In a course create a new Forum post . Click on Add a new discussion topic, set an arbitraty title, use the file content from the attached file post_text_32114.txt as it is for the post and set the selection to Markdown format. Save your post and click to view it. Expected result: the block quotes and the code section should be rendered correctly, there must not appear any popup (in case of XSS attacks). Output should look very close to the screenshot mdl32114_parsed_output.png . Edit the post again as if you would want to do a correction Excpeted result: the markup appears as it was saved before i.e. the same content as in the file. Make some small changes an save the post again. Expected result: same as in step 3 except for the changes that you did before. Repeat the test procedure as well on: A "Text and media area" activity/resource (this is the former label resource) A "Page" activity/resource When entering the text from the file, select "Markdown format" and save the content. Note: the output of the "Text an Media area" looks a bit awkward (long lines have no appropriate line break) because this type is not suitable for long text. However the test case must passed as well.