MacDraw Pro 1.5v1:
Text sized with the Font Size command will disappear when entered, if the font size is changed before the text is entered.
The following steps reproduce the issue:
1- Click the text tool
2- click in the document to create a text object
3- select Font Size command
4- type a number for a font size (for example 14 and 16), then press Enter
5- Type some text in the document. The text will be the correct font size
6- Press Enter. The text disappears.
Using the Font Size command on selected text works correctly.