After updating to 4.7.9 we face big problems with random redirects, appearing when users switch between languages.
In JS 4.7.8 everything worked fine.
For example:
In 4.7.8 a group link looked like this:
<a href="***/de/community/groups/viewgroup/53-employment-perspective-for-migrants-and-refugees.html
In 4.7.9 it changed to:
<a href="***/de/community-de/groups/viewgroup/53-employment-perspective-for-migrants-and-refugees.html
Another example:
In 4.7.8 the main link to Jomsocial looked like this:
https://www.***.eu/en/community.html
In 4.7.9 it changed to:
https://www.***.eu/en/community-en.html
As a consequence of this all sidebar modules disappeared, as they were associated with the 4.7.8 links.
When users click on the home button of the JS menubar, they are redirected to the frontpage of the website.
When users are inside a group and change language, they are taken to the groups list
etc. etc.
Cache cleaning and even reinstall of 4.7.8 didn't help. So, in the end I had to restore the whole site from a backup.
Regards S.