We tried using pywebview for a cross-platform desktop app when it was version 3.x and some of the features were limited, especially when it came to systray interactions. Will have to try it out again. In the end, for that specific project, we ended up settling on NeutralinoJS. Wails was another big contender but due to limited GoLang resources in-house, we decided not to use it. Reference: https://neutralino.js.org/