Hello there,
This is an issue I have faced and have heard from many of my friends as well. And yes, I know it is really frustrating, and this bug is quite common, as far as I've heard. I ended up watching videos with this issue for several days (I only have my laziness to blame!). But, when I asked about this to a friend of mine was when I understood that it was actually a bug. Only after that, I reinstalled the app, and everything has been fine till now.
Do try deleting and reinstalling the app, and I hope it works for you!