Hi, when I am going in 1.11+ and when next I back in older of the 1.9, it is remove my language
(I have set french language and it is set in english)
Environment
Java: 8, Windows 7 (x64)
RAM: 8 Go of RAM
Hard disk: 1 To in HDD (seagate barracuda)
Graphic card: Nvidia Geforce GTX 960 4 Go
Processor: Intel Core i5-4690k 3.50 Ghz
Probably invalid, downgrading is not supported and there might have been changes to how the selected language is stored in the options file.