Access Steam features in the Windows WebView2, macOS WKWebView, and Linux CEF exporters. Requires r407.2+ for Windows, r417+ for macOS, and r412+ for Linux.
Sure, I will contact them, thank you very much.
Could you just confirm that I'm doing everything right?
1. Leave the developer option unchecked, and the overlay checked, and put my game ID
2. Create an action using Steamworks->Unlock Achievment with "achievement name"
3. Export as Webview2
Well, you replied that everything seems to be fine, I've already sent a Ticket to Valve Support, let's wait, who knows, with many WebView2 developers creating Tickets, they might not make an effort to fix it.