Animated GIF not working properly?

I just read similar issues and was dumbfounded to here it is not considered a high enough impact feature to deal with on the development team. That ability would open up a world of possibilities to users who want animations that they used to be able to do in Flash easily. 

We are currently converting 200+ courses into HTML5 because in 2020 Flash will be removed from all our browsers by our IT department in the government sector. We created a bajillion interesting animations in Flash that are just not possible in Storyline or the other big ticket software used for eLearning.  HOWEVER, by creating animated GIFs from the sequence of frames from any of these animations allows us to achieve the same look and level of intricacy desire in our animations. 

Seems GIFs work if they are set to loop when created but not if set to only play once. That would be a game changer for me.

I am required to jump between SL and the other big name software because certain features are not available in each, but this would allow me to be one step closer to always using SL.