HTML comment not working in Markdown block

I use a Markdown Block to create a table showing whena particular class is being held. When the class is filled I switch the time column to  CLOSED by moving HTML comments between two lines for that column. The Markdown code is shown in Image below.  I switch between the actual time and CLOSED by moving the HTML comments (<!--  --> between  the two code lines for the time column. This works fine.

But for a new class I've entered, with a new time table, inserting an HTML comment around one line generates the "data-preserve" message shown in the image below.   As far as I can tell the markup for  the two tables is identical.  Does anyone know what might be going on?

Thanks

I can see you're missing a semicolon ( ; ) in your HTML code after the span style attributes in both blocks. It should read style="color: black;" in the first block and style="color: red;" in the second block. 

Not sure if this is what is going to fix your problem, I'd have to take a look at your website so if you're still having problems please share a link to your website.

Thanks, Lu, for looking at it.  Actually, all the tables have the missing ";" including the ones that work, and putting the semicolons in doesn't fix the one that doesn't work. 

The site is at  http://madison-society.org if you think looking at it might show something.  Click Renew CCW under CLASSES to go to the page. 

Thanks,

Steve

Hi, did you manage to find the solution?