When publishing to html skin buttons disappear
Hi there,
I created a file in CP 2019, as long as I did'nt publish it, the preview rendered the skin as set up. But as soon as I publish (to html) most of the skin buttons disappear and I can not get them back in the editor.

I have set up my e-learning to use the play, and Back and Forward Buttons, and these are exactly the ones missing.
I tried using another skin, I even tried to copy all my slides to a new project, its the same.
What am I doing wrong? How can I get the needed buttons into the skin?
Help Please.
THX
A.
