"Solo frames childrens" in "solo frame mother" not switching

[panaremix]

Hello,

Is it possible that the "frame solo mother" can not run more than one "solo frame children" at the same time?

Example:
In the "frame solo mother" I put two "solo frame children"
^ Run "solo frame children A"
^ Run "solo frame children B" then "solo frame children A" turns off automatically

For the "buttons" it works perfectly!

If I wanted to use more "solo frames children" at the same time,
simply put them in the normal "frame mother" ...

[panaremix]

Please see the picture: