Hack solution to specific display problem in Slde Show mode

[Nghia]

I'm using version 2.4.1 and have noticed a problem when running in Slide Show mode, whether full screen or windowed. I have edited a master slide containing the text box to have a color fill and 70% transparency. In full screen mode the transparency option is ignored, as if it is 100% transparent.

NOTE: My uni server doesn't permit linking images. You have to copy and paste the URL into the browser to view them.

A screenshot of what was incorrectly being displayed:
http://users.monash.edu.au/~nho/impress/slide-incorrect.png

My hack solution, which I found by accident, was to add a filled rectangle somewhere in the master slide as follows:
http://users.monash.edu.au/~nho/impress/master-after.png

This is the slide being correctly displayed:
http://users.monash.edu.au/~nho/impress/slide-correct.png

If I make the rectangle invisible it will display incorrectly. I have not experimented with this further as I have more or less solved my problem.

Hope this helps other people with formatting issues in Slide Show mode.