Amazon echo volume jump when controlled from iOS

[Acrobot]

Plan

Premium

Country

 Poland

Device

iPhone SE

Operating System

iOS 12.1.2

My Question or Issue

 I frequently play music on my Echo Dot connected to external speakers. I also frequently change the music volume using the volume buttons on my iPhone. However, when I change the volume using Alexa when the iOS app is closed, when I try changing the volume using the buttons on iPhone after relaunching the app, the volume seems to always start from 50%, which results in huge jumps when playing quietly. 

[Axl1990]

Me too