How do I get the source atop blend mode to work properly?

I'm working on building a dynamic persistent global mini-map. I'm going to write a walk through for it assuming I get it working. I've used the example file to move ahead on my project, but now the fact that I can't get the blend mode to work on my own is driving me insane.

I start a new project. Create a layer with transparency, and force own texture on. I create 2 sprites. I set the one at the bottom of the z order to blend mode "source atop" and have it overlap the other. What happens is the top most sprite stays the same and the bottom sprite becomes invisible. I've tried a multitude of tweaks, and changes to no avail. So can someone give me a quick guide? or fix what ever I'm doing wrong?

Thanks in advance.

I'll try to make a video tomorrow to show what is happening it may be a bug.

(I'm using Construct 2 Personal through Steam)

I've added in new sprites to Blend mode demo and set them to source atop on the effect 7 layer. I moved them to the bottom of the z-order and they worked fine. If I move the 5 shield(object the source atop objects load over) to the bottom of the z-order it still works. If I make a new sprite on the same layer and put any of the source atop objects behind it; it doesn't work. The 5 shield logo is magic. :C

Never mind. Instead of just using send to the bottom of Z order or to the top of Z I just used edit Z order and moved stuff around. After I did that the blend mode worked fine?

I'm having trouble figuring out source atop, too. Whatever object you mark "source atop" is invisible anywhere it overlaps transparency on its layer. What's giving me trouble is having 2 objects on the same layer be source atop, which might not be allowed.

Aaaannnddd..... I just saw this post is a year old...

Eh, Steve!