language switch moved due to CSS change

While upgrading the underlying OpenFed distribution fron 1.2 to 1.5 I discovered a layout change in the header.

In attachment you can find before.png and after.png.

We see a similar behavior for all sites after an upgrade from 1.2.

The root cause is a change in CSS between 1.2 and 1.3 in profiles/openfed/themes/contrib/ofed_theme_nerra/assets/styles/design.css

1.2

#tools #block-locale-language {
  position: absolute;
  top: 0;
  z-index: 1000;
}

1.3:

#tools #block-locale-language {
  position: relative;
  top: 0;
  z-index: 1000;
}

Probably there is also a fifference for logged in and non logged in users. Probably issue #2149807 has to be revisited.