Opera showing a single cell per table row

Question

I'm not really "supporting" the old version of my project, but one of my users came to me with this screenshot:

screenshot http://www.ezimba.com/work/140502C/ezimba18438212830500.png

As you can see, for some reason, the table is rendering with a single cell on each row. You can also see a similar effect on the semi-transparent "toolbar" at the bottom of the page, where the "bookmarks", "user status", "Apps", "Friends", "Notifications" and "site status" cells are each on their own row, causing the bar to be a lot taller than it should be. [EDIT: The user tells me that this apparently happens on all sites they visit.]

Anyway, I am not an Opera user and the only mention I can find on The Google is this email archive from 2002 where the developer was basically "it works fine for me" about the problem. Kinda reminds me of this xkcd strip if I'm honest.

Anyway, I just figured I'd ask if anyone here has heard of this problem, encountered this problem, or even by chance resolved this problem and could help me figure out what's going on? Last thing I want is this bug creeping into newer projects ;)

Answer 1

User resolved the issue with this option:

screenshot http://www.ezimba.com/work/140502C/ezimba18438222149900.png

That said, I have no idea what the option reads XD Anyway, thanks to the people who took the time to comment above.