Thin lines rendering issue with Safari engine

Hi!
i’m using ionic react to build my application and i have this registration page with very thin lines (1px), no problem running my app on android/chrome but as soon as i try it with safari i get strange behaviours, the thin lines keep disappearing and overall do not work as intended, is this a know bug? or am i doing something wrong?
Thanks

Can you give a code sample of an <IonPage> that causes the thin lines in Safari?