Truncated code listing in class::resource::slides

[BonjourGit]

Hi,

There is formatting issue with code listing in the class handout slides (pdf).
The line spacing between code lines seems to be too large.
A long code listing can thus be truncated and becomes incomplete.
Please see the following example excerpt:

It will be very much appreciated if the formatting issue can be fixed.

Many thanks!

[CleanCut]

That looks...terrible! I'm afraid I have no control over how O'Reilly mangles my slides, but here is a screenshot of what it should look like!