I just updated my server to Webmin 1.840. Suddenly, the Virtual Framed Theme (which I have been using for years) has a lot of display glitches - incorrect background colors, oddly color borders, and so on.
Investigating a little, I found what appears to be a bug in the generation of tables. Many of the tables displayed in webmin have this kind of code:
... Note the bgcolor spec--there is no closing quote, so the class='mainbody' is getting ignored. Could this be a new bug?
Sorry, the HTML snippet I inserted in the previous post got munged away. Here is what I intended to insert:
<td width="2" bgcolor="#f5f5f5 class='mainbody'">
You're right, this is an incompatbility between webmin and the old theme. We'll release an update..