Today I downloaded rFactor2_Build134_Setup.exe, because previously I haven't updated my rFactor 2 until today. But there is a problem with showroom, when I want to select series, car, track or even want to setup specific settings for race weekend then there are some missing icons, for example EXIT or BACK.. Maybe someone could tell me what I have done wrong or have missing. Happy new year!
The UI didn't install, probably if you didn't fully remove the previous installation. Antaeus had the advice right, but I will also report this issue.