Concepts are not shown properly/updated after an erronous concept page

[kouralex]

At which URL did you encounter the problem?

http://finto.fi/juho/fi/page/p8332

What steps will reproduce the problem?

1. Go to link provided above
2. Click alphabetical listing
3. Select any concept

What is the expected output? What do you see instead?

I'd expect the concept to open as usual. It does not. Only a clear refresh of the page will restore functionality.

What browser did you use? (eg. Firefox, Chrome, Safari, Internet explorer)

Firefox