First start on Windows fails

Hi,
First start of ProofChat demo on Mac is fine, on Windows this shows up (layout pc_ProofChat):

Application Unavailable
Initial Props Validation failed: user.userName: Username is required
This application requires FileMaker to be running.
Please ensure you’re accessing this from within FileMaker WebViewer.

Any idea what could be the cause for this?
Thank you!

Thank you for this report. I really appreciate it.

I’ll take a look at it.

What version of FileMaker are you running on Windows?

Todd

Thank you and sorry for my late reaction. It’s version 22.0.3.300
Joachim

Same issue on macOS 15.7.2 using FMP 22.0.4: