Very left of the touchscreen not working

[Madwaii]

I have an iPhone 8 and with every skin I tried (I even made one to be sure), the touchscreen don't work near the left border, while being still considered as the touchscreen (I saw that in debug mode of the skins). It can be quite problematic when there is a need to touch one of the left corners of the screen (for example in Pokemon Rangers Shadow of Almia to change the upper screen view).
Is it a bug on my device only or will it be fixed in the future ?