Two things I’ve noticed:
1. In iOS 18, if I got an email, went into the Mail app (Apple’s pre-installed mail app) and swiped to delete it from the inbox without reading it, I’d then immediately get a notification come through of that email. Deleting an unread email by swiping it deleted from the inbox in the mail app no longer gives this erroneous notification in iOS 26. So one bug fixed ✅
2. Since iOS 18.4, played podcasts haven’t been deleting. I finished listening to a podcast on iOS 26 yesterday, and today I’m pleased to see that it’s now been automatically deleted. So a second bug fixed ✅✅
Another to add. Since 18.4, Mail notifications have sometimes just been going straight to Notification Centre, without lighting up the Lock Screen, etc. That’s not occurred once on iOS 26, so I’m marking that as fixed too!