We experienced this behaviour in CL GUI 6.0 and 6.1 on Windows Server 2008 R2 and 2012.
Sometimes (if you have a script window(s) open long enough) it may blank your script out leaving you with a blank script tab and asterisk on the tab signifying that the script changes haven’t been saved.
If you click save it will save empty file instead of your script. Fortunately it does save the actual script in Tcl revisions, so it can be restored.
We didn’t find a way to reproduce it. It just happens occasionally when the GUI is open for long time.
When it happened this morning I had two Script Editor tabs open and both blanked out. If you close the tab(s) a pop up message will ask if you want to save changes and if you click yes your script is gone.
I created a service order #8602672 with Infor.