I'm a bit confused about the answer being marked as accepted. Does this mean there wasn't a discrepancy between iOS 18 and earlier versions? I'm asking because we're experiencing a bug where the UITextView does not always resize its height correctly when we add an attributed string. We had an old hack that involved disabling/enabling isScrollEnabled, but this stopped working with iOS 18. Might not be related at all, but this post is the closest I've come to something that could be.

Experiencing the same issue. Toolbar works fine in simulator, but does not show up on physical device. However, if I open the view, move the app to the background and then move it back to the foreground again, the toolbar suddenly works as expected.