Ever faced the perplexing issue of windows not opening in your Appeon application, despite everything working perfectly in PowerBuilder? Dive into our exploration where we unravel the mystery behind the failure of the OpenSheet and OpenSheetWithParm functions in certain scenarios. We share our encounter with a sneaky space character that turned out to be the villain, and how a simple fix restored harmony across platforms. A must-read for developers navigating the nuances of PowerBuilder and Appeon.