It sounds like you need to find the Rendering Options in Singularity Viewer (I checked their website to have an idea as of where this might be in your viewer but couldn't find it, sorry) and then un-tick Automatic Alpha Masks (there should be 2: non-deferred and deferred and both shouldn't be selected).
Here's where to find it on Phoenix Viewer http://gyazo.com/7a8fe429c05b379bbfbb1e4dea768b22
Open the Advanced menu at the top of your viewer screen (ctrl + D to enable it if it's not enabled yet) Then select Rendering> Automatic Alpha Masks (non-deferred) and right below this one is the deferred option. Un select both and you're set The only problem with selecting this options is that it might affect how you see other objects, like mesh for instance, some might look like they are transparent or that you can see through them but you can enable / disable according to your needs with a few clicks anyway.