So I logged on and saw that there was a new beta update, but after entering one of my creative worlds and pulling up my inventory, I saw that the banners were invisible. Also, I went to see some banners that were placed down, and they were also invisible. I tested it in survival and it also happens.
What was expected:
The banners would be visible after I went to the inventory.

What actually happened:
The banners were invisible.

How to replicate it:
1. Get the Beta Tester version of MCPE.
2. Log on to any world.
3. Open the inventory and check the banners.

Thanks for your time.