This specific build was released to address stability issues, crashes related to specific truck configurations, or errors introduced in previous patches. For players, this version represents a more stable experience than the initial launch of the 1.49 update.
If you are trying to make a specific version of the game work, you are likely referring to Update 1.49 euro truck simulator 2 v149223sp2p work
A quality-of-life feature: you can now scale the user interface separately from the game’s 3D resolution, making the game more playable on 4K monitors. This specific build was released to address stability