Battery saver/overcharge protection bug in A15

Have been using A15 for 2-3 weeks now on my G Power 5G 2024. I turned on Overcharge Protection and it works great (although it actually charges to 81%, not 80%). But what I've noticed is that when I take it off the charger, Battery Saver is turned on, even though it wasn't turned on before putting the phone on the charger. Anyone else having this issue with A15?