On Frame 3 of this MFA, I have the visibility of three actives set to invisible on start of frame. However, if you launch the app and press "Search for player" (the link leading to Frame 3), there is a flash of light as the frame transition and then all three actives are shown, fully visible, before the "start of frame" events are activated.

I also tried stuff like fading into the frame but I guess transitions don't really work yet.

Again, the MFA: http://www.mitologia.hu/gimisakk.mfa