[SDK Android] WebRTC conference missing event

Hello,

I'm implementing WebRTC conference in an Android app using SDK 1.61.0. Test is made only with 2 participants. Leader is starting conference from UCaaS client and participant
joins the conference from the app. They are connected to the conference in audio. Then I'm facing 2 issues:
- When leader adds video, there is no "onCallModified" event received by the app indicating video has been added so I don't know when to subscribe to leader video. This event is fired when leader shared his screen.
- So because of the first issue, I use screen sharing event to subscribe to publishers list. I can display leader video (render DISTANT_VIDEO stream) on the app only if I do the following operation:
1 - Share leader screen
2 - Add leader video
3 - Remove leader screen sharing
Nothing happens if I do it in this order:
1 - Add leader video
2 - Share leader screen
3 - Remove leader screen sharing

Thanks,

Maxime