I have not experienced any of these bugs. My shared images always load, my automatic updates always work, my code format tags work in chat, the autoupdate is so invisible that I've never noticed it, and the UI always loads.
One thing you listed I do have, but I don't consider it a bug:
> - shared images sometimes give you a placeholder empty box while loading.
That's to let you know that it's loading, and to expect an image to appear.
I use teams on MacOS (intel), Windows, and Android.
I discover new bug every week, and my colleagues are also treating it as "working as expected" when they find only a few bugs. You are extremely lucky to completely avoid bugs in Teams.
One thing you listed I do have, but I don't consider it a bug:
> - shared images sometimes give you a placeholder empty box while loading.
That's to let you know that it's loading, and to expect an image to appear.
I use teams on MacOS (intel), Windows, and Android.
Are you on some weird or old beta version?