Missing Overlays on iOS 11.0 - 11.2

[pstued]

We are using a JSON configuration to generate a Playlist with an advertisement followed by the actual video. During the Advertisement some overlays should be rendered:

• APSMediaPlayerButtonOverlayController
• APSMediaPlayerTextOverlayController

But on iOS 11.0 - 11.2 we noticed that the same configuration will randomly show or show not those overlays on the advertisement.
Before iOS 11.0 and starting 11.3 it works as intended.