We recently adopted our app to Liquid Glass and received a complaint from a visually impaired user that VoiceOver does not read out the number of unread items in the tab bar anymore. We checked and it seems that before iOS 26/Liquid Glass, setting a tab bar item's badgeValue property also set an appropriate text to its accessibilityValue property (something like "3 items"). But with Liquid Glass tab bars, this does not seem to be the case anymore.
We fixed this by providing our own accessibility value, but we're wondering whether this change was a deliberate choice or simply a bug? If this new behavior is considered a bug, I would post a bug report.