can we fix this bug?

my speed is 25/40 on my alsace, i know i haven't reach speed cap =.=, my problem is my OH, when i cruise with 25
knt my oh bar decreases =.= all i can do is go with 24 knt or adjust till i go 25 without OH bar decreasing, its so frustrating
and sometimes when my OH is depleted, it doesn't recharge sometimes i need to press F for it to start same goes on
my riche 26/43