The OnePlus 5 and 5T received their Android Pie update right at the end of 2018 but it was discovered to come with annoying issues for some units. The biggest problem with the new Pie update was the WiFi connectivity.
Some users report that the WiFi didn't work in select third-party apps and experienced bad WiFi stability overall. Well now a hotfix udpate e addresses that as well as the physical navigation keys of the OnePlus 5. They appear to stop working randomly.
Additionally, the patch adds the missing 4G VoLTE toggle, optimizes sRGB and Reading display mode and takes care of the random reboot when Screen Casting.
I've not had my pie update in the UK yet?
Only what they do is care to release latest OS'es withoit proper testing. Never happens with Samsung, it takes time to get uodate to new OS, but in my 5 years with them I had no bugs on releases of new OS'es. So much for getting it first than things ...
Many apps not working on WiFi after upgrading to pie but working fine on mobile data