Hi @Cortablo, there are still many enterprises and consumers that are using older versions of Windows, such as Windows 7 and Windows 8.1. We wanted to make sure that we had a modern browser that they could use, and getting it to work on Windows 7 and 8.1 meant that there was little additional work to get it working properly on Windows 8. Thanks - Elliot
If only we could have everyone on Windows 10. Heck of a nice thought. In one sense I can understand why you find it surprising to bother with the pre-10s. But, until nobody is using them anymore, have to be considerate of them. We do try so hard to urge & encourage people to move to 10. In time, it will naturally will evolve into Users being on 10, anyway.