Couple of little bugs I think?

  1. PictureBox right property doesn’t seem to work when left is set to ‘auto’
  2. Signature won’t capture if the control is hidden at design time. eg If I unhide it in my app after being hidden at design time it won’t work. Hiding it in app then unhiding works ok.

These both sound like issues which are out of AppStudio’s control - it’s how the underlying browser works. You’ll need to try to work around them.