I don't understand what determines the number of WebViews created?

[iamspark1e]

I migrated an old app from Tauri to Wails (v2). This app only has a simple window for toggling some options. Both are running on the same Windows machine with an i5-8265U CPU (4 cores, 8 threads). I noticed that Tauri only created 3 WebViews, while Wails created 6. Aside from the running processes, the memory usage of Wails is roughly twice that of Tauri. I would like to ask, why does Wails create twice as many WebViews as Tauri?