Language Tabs messy after upgrade

[a_marffy]

Hello! After I upgraded PW from 2.5.? to 3.0.116, my language tabs in the backend behave strange. I have 3 languages: german, french and english (default). Since I upgraded, all multilingual fields show the 3 tabs (DE, FR, EN) plus an additional textfield below for EN (see screenshots). The german tab is ok, but the upper tabs FR and EN both show the content in french, while the additional tab below shows the english content. When I click on the folder icon to the right to change the view, all looks ok. Also the frontend is ok.

I uninstalled and reinstalled the module «LanguageTabs», but that didn't help …

Any ideas?

Thanks a lot, Andrej

[Zeka]

@tron1000

Do you have any js errors on page? 

Have you tried to clean the browser cache? 

[dragan]

Try switching / updating the admin-theme(s).

[a_marffy]

Hi Zeka and dragan, thanks a lot for your answers! I found out that changing the order of the language pages in Admin > Setup > Languages caused the problem. I had changed the order a while ago. As soon as I moved the default language (english) back to the first position, the tabs looked ok again. I don't know why that happens.

Anyways, thanks a lot for your help!