I am running the on macOS 12.6.2 and whenever I switch to the app (after leaving it open in the background) the sensors values are not up to date and I have to manually reload (CMD+R) to get the right values.
the setting Automatically close connection also does not seem to make a difference.
This likely stems from a bug in WebKit introduced in macOS 12 which is partially resolved in iOS. You can hide the app and unhide it and that’ll kick the WebView into updating, or hit ⌘R as you’re doing so now. This is something I may be able to work around, but it’s tougher to get right on macOS than iOS.