The message area that appears at the top of the dashboard pages doesn't appear any more as of 5.5.x. The html is still being output to the page but it's hidden due to styling in concrete/css/ccm.dashboard.css. Is there a good reason this message area isn't being shown any more? I have several add-ons that use this area to return information to the user. The styling of the area if you remove the display:none looks fine, so I wonder if this is just an oversight...
Well, I'm not sure why you guys can't see the problem - maybe a different style of message box? - but it is a problem. Please take a look at concrete/css/ccm.dashboard.css and you'll see that line 5 is:
I just checked the source in github and the line is still there.