Switching from Survival to Creative mode isn't working

Before the update, I was able to switch back and forth between Survival and Creative mode without problems. But now since the update, when I switch from Survival to Creative, the Creative won't work. I can't fly, and I can't get all of the objects, and it still shows my survival inventory. It even says Creative but it is not Creative. I have even made a new game that starts with Creative and it works perfectly fine there, but not when I'm switching from Survival to Creative. I hope this issue gets fixed.

Below are pictures of my game in Creative mode after Survival mode.