Update from 5.4.0 to 5.4.2 makes the whole site left-right mirrored...

[westernmg]

After updating my forum https://www.iodzone.de to the newest version something strange happens.
The updater does not give any error, i have made the update twice.
After the update everything on my Forum and the admincp is like seen through a mirror.
Any hints on this?

[delicjous]

Did you download the custom language german? Load it again to your forum using the language-uploader.
As seen in your pictures you speak german:

Here is the answer in german. I can't fully get any hint on it and did not have the time to test it. But it happens at my forums too.

https://www.vbulletin.com/forum/forum/foreign-language-support/vbulletin-5-fragen-und-probleme/4390276-nach-update-ist-die-formatierung-bei-deutsch-flasch