The old Robux logo seems to be in many places on the Roblox app. This bug always shows up for me, and to see, just look in the Roblox app.
This bug appears in many places in the Roblox app. For example, the home page, and more place.
I don’t know when it started happening, but I don’t think it was always like this.
The device I have is the iPhone 11, which is running iOS 13.1.3.