We can invite people even if invites are deactivated

I noticed we can invite people on a server via the mobile app even if invites are deactivated... Effectively, if you choose a server in the app, there will always be the invite members button. I managed to invite another account on a private server where we are not supposed to be able to invite people in (and we can't on desktop...)
I don't really know if it is a bad config of the server or if it is a bug in the app but I don't think we're supposed to be able to invite people only on mobile.