alice-teacher Screen goes dark when "Say" command used?

[Roger Wistar]

One of my students noticed that the lighting in his program seems to go dark when certain "Say" commands are used. It doesn't happen all the time, and it does not seem to be a problem with the syntax of his program. Has anyone else noticed this problem, and is there some way to fix it?

The problem has only been noticed on Macs — is the platform the issue?

Sample program is attached.

Thanks!

Roger Wistar
The Hotchkiss School
rwistar at hotchkiss.org
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