The problem is although this fix works on Windows 10, the bug still happens on Xbox, which does not allow custom server IPs. I am on Windows 10 however, and this fix has worked brilliantly, thanks Lee.
I may be wrong but I doubt the bug reporting page is the best place to sort out this issue, may I suggest this website containing some contacts that may be able to help: https://help.minecraft.net/hc/en-us/articles/360035347351-Marketplace-FAQs
The problem is although this fix works on Windows 10, the bug still happens on Xbox, which does not allow custom server IPs. I am on Windows 10 however, and this fix has worked brilliantly, thanks Lee.