I've recently changed the order of my text editor plugins to put the ATTO editor on top. As a result, the new editor shows up correctly when editing some HTML text, as labels, question texts, etc. as is shown below:
So, the plugin is correctly installed and working. However, when I click on a "Make comment or override mark" link present in every quiz attempt question, the editor appears without icons in the toolbar:
My question is: Where should I start to find the source of this bug and fix it? I've looked into my error log files and they seem clean... I'm a bit lost and my only option is to switch back to TinyMCE again...