This is a display issue on the main screen just below the whale.
When the raindrop progress is very low, the progress doesn’t look that great on an iPad. Looks like a graphic glitch. Once I see it, I can’t unsee it. My eyes are then continually drawn to it.
Once the progress reaches 5% or so, it starts to look much better.
Might not be a big deal on a phone, but on an iPad it looks a bit buggy.