thuggsFor sure this problem is in you try to abjust your wifi settings and about this when you are connected in wifi but you dont have internet the problem can be in your wifi router or your wifi internet provider so try this to other router and other wifi interer provider becouse i alo have this problem sometimes but when i restart my wifi router everything is fixed after this .... This problem appear on my old galacy S10 lite and another Xiaomi phone but the problem is in my wifi router or internet provider not in this 3 phone .... Also in your settings when your phone have wifi but not internet on this wifi network he automatically change the network to cellular data this is also setting that can be abjusted so first make some tests whit other phones if you have or other wifi routers and internet providers and after this try to search other solutions
No mods want to send this bug to the dev team?
There are also times when phone comes from mobile data into WiFi the same thing happens, WiFi connects but says it can't use the Internet. Disconnecting and reconnecting fixes this. But i never have to do this on my rog 2.