When I'm entering giveaways and you hit the "enter giveaway" button or sometimes the "confirm and enter" button it lags and has to be pressed a second time. The color of the bottom changes to a darker blue too... I mostly notice this when I'm on app as that's where I usually enter giveaways and it seems to happen more when I have a filter applied for searching giveaways..

I uploaded a pic of the button changing to the darker blue before I pressed it a second time. I have a screen recording of it too but couldn't upload that.