I've just upgradeed to Ubuntu 23.10 Mantic Minotaur. I'm realising a nice new feature, where any maximised window's top bar integrates with Ubuntu's status bar - it completely disappears. While I like this feature, I'm also noticing the Close, Maximise/Restore & Minimise buttons disappear from a window if it's maximised.
How can I access and use the window buttons on a maximised window?
EDIT: As advised by @Octopus, I'm attaching a screenshot:
Also, to answer his question, do I use any GNOME extensions, I do not. The same behaviour exists even when I completely disable GNOME extensions.