HiMarko Kolic,
Greetings!
Thank you for posting in Microsoft Community.
Based on the description you posted, it seems that you have an issue with MS Office wherein in presenter view your PowerPoint Slide goes black.
Let’s work together in finding the best solution to this issue.
For me to better understand the issue, I’d like to ask a few questions:
• When did this issue occurred?
• Have you already tried to update your Android phone and tablet and checked if it has the same behavior?
In the meantime, we would like you to check and review the details provided down below:
What you need to present PowerPoint using your smartphone
- A PowerPoint presentation on your phone or stored in a cloud service such as OneDrive.
- An Android phone that supports Miracast. For example:
|
Brand |
Phone |
|
Alcatel |
A7 and A7 XL |
|
HTC |
U11 Plus and U11 Life |
|
LG |
V30 and V30 Plus |
|
Samsung |
Galaxy S8 and Galaxy Note8 |
|
Sony |
Xperia XA2 and XA2 Ultra |
|
Xiaomi |
Mi 5X |
Check your smartphone manual or check with the manufacturer to find out about Miracast support on your phone.
- PowerPoint for Android installed on the phone.
- A large screen that supports Miracast. Some large wall-mounted monitors (and larger TVs) have Miracast built-in. If the monitor or projector doesn’t have Miracast built-in, an adapter can be used. For example:
To present wirelessly from a Samsung phone to an external screen or projector
The exact steps vary depending on the brand of your phone. This procedure, like the video above, describes the process on a Samsung Galaxy S8 or Note8.
- On your phone, slide down from the top of the screen to open Quick Settings.
- Tap Smart View to open that app.
Smart View looks for a nearby monitor that supports Miracast. When it finds the monitor, it connects the phone and the monitor. If multiple screens are available, they'll be listed on your phone screen. Tap a name to connect to it. When the connection between the phone and the monitor is established, the contents of your screen appear on the monitor. 
- On your phone, switch to PowerPoint and open the presentation. Tap Slide Show
to begin presenting.
- Navigate through the presentation as you normally would, tapping the forward and back arrows on the left and right side of the slide on your phone.
To turn on the laser pointer, press and hold the slide. Once it appears, move the pointer by dragging.
- To stop casting your phone to the screen, tap the connection icon
to open the Smart View controls, and then tap Disconnect.
Referenced link: Run a presentation from your Android phone - Microsoft Support
Hope this helps,
Sincerely
Khou Sun
Microsoft Community Moderator