It's interesting they're using Electron for Win7/Win8 when React Native for Windows has a WPF rendered that works nicely on Win7 and 8. Perhaps they just found

It's interesting they're using Electron for Win7/Win8 when React Native for Windows has a WPF rendered that works nicely on Win7 and 8. Perhaps they just found that maintaining two slightly different RN office apps for Windows wasn't worth the effort given the declining market share of the older Windows versions.