lprun9 is not executable on macos

I just upgraded to linqpad 9.8 and saw in the release notes "The LPRun CLI tool is now included in the macOS bundle. To create a symlink, go to Tools | Install Command-Line Tool."

The suggested terminal command correctly creates the symlink and makes it executable. However, the lprun command at /Applications/LINQPad 9.app/Contents/MacOS/lprun9 is not executable, and the usual trick does not work:
sudo chmod +x lprun9
chmod: Unable to change file mode on lprun9: Operation not permitted

I suspect the app bundle ships with lprun9 having incorrect permissions and that macos prevents me from manually setting unix permissions. Could this be fixed by the lprun9 executable having correct permissions in the app bundle from your side?