[Resolved] HTML code shows at the bottom of ticket-page (where paging is located)

Extra note:

Tested it in the original version (upload directory renamed to /upload_original and copied ost-config.php) and it works as expected in that version.

I did some more testing and found that the problem only happens with this nice plugin enabled: https://github.com/clonemeagain/attachment_preview

So, I wanted to report a bug at the plugin, but it has to be said that the plugin works well in the standard osTicket (I tested it). Somehow there is a conflict with osTicketAwesome. When I disable the plugin, the problem is gone. 

Could you please have a look at this? The plugin is awesome too. It prevents you from downloading PDF’s, images and even audio-files (voicemails). It’s really nice and would be a shame if we have to choose between two awesome components.

I was able to fix the plugin myself and add a pull-request to the GitHub project.<br />
If anyone has the same problem, you can download the file I modified from https://github.com/clonemeagain/attachment_preview/issues/44

Still not sure why this was a problem with osTicketAwesome only, and not with standard osTicket.