If the VSYNC command is used in a user-defined command that frequently creates a large number of strings or arrays, it may hang.
When the text input dialog is opened and closed continuously, it may hang in rare cases.
Issues with menu screen etc.
Significance: High
If the user starts the Beginner's Guide after deleting or renaming a file using FILEMENU while editing or unsaved BASIC programs, and then cancels the first confirmation dialog, the operation becomes inoperable.