This wasn’t a problem before when using the same number of tabs. The only thing that has changed in the past 24 hours was that I reinstalled JA Bulletin (freshly downloaded from the JA website). With the old version the tabs looked fine. If you have a look at the tabs in your demo site for Teline III you will see that the tab titles look different to the tab titles on therebel.org. On my site, there are now several spaces before the first letter, but not on the demo site and not on my site either before installing the latest JA bulletin module, which is why the tab titles now longer fit into one line.