Hi Tom,
that’s weird! The left sidebar is totally missing, the right sidebar is shown below the posts – but only on these three pages:
http://www.fudiggl.de/blog/
http://www.fudiggl.de/blog/page/7/
http://www.fudiggl.de/blog/page/14/
All other pages show up correctly! And I don’t see a pattern… as the rest of the sites appears correcty I assume, it’s not a widget…
I use the events calendar (Modern Tribe) and the events are added to the blog, but they all behave correctly.
Any other idea/s?