Last week I added dutch translation to my PageLines setup as found in the documentation.
Today I wanted to enable the tertiary sidebar on a page but instead of showing the widgets I added to it it kept telling me that there were no widgets selected.
After researching the issue together with PL support we found that, oddly, the translation was causing this unexpected behaviour.
So for me the temporary workaround is to just use the english version but obviously this is an issue somehow.
Hope you guys can find and fix the issue.