In AnimateCC HTML5 Canvas I have made the following situation.
In the first frame of the main Timline is a movieclip with an animation, lets call it "myMc".
Lets call the layer in the main Timeline, where myMc is positioned "mcLayer".
The Timeline of myMc does not play, if there is a keyframe in the next Frame of "mcLayer"
myMC plays if there is an normal frame in the next Frame of "mcLayer".
It also plays if there are no more frames on "mcLayer"
What is the rule behind this?
Is this a bug?
For what it's worth, I tried replicating the scene based on your description, and it plays for me in any scenario. Tested on version 18.0.1 (build 115)
I think it has to be a bug with version 19.
I made the same Movieclip in version 19.0(build 326) and version 18.02 (build 126). In version 19 is the problem.
You can download the fla Files at:
Its worth for making this tutorial.
Here is a screenshot of my 2 test fla files
When I deactivate advanced Layers it works.
Modify / Document / advanced Layers
Oh my god! I searched everywhere to find an answer why a movie clip aniamtion wasn't working on a single frame in the main timeline! And it was advanced layers option! I have it on because of the camera tool.