MessageBox modal dialog can show enabled minimise button

Status: Fixed
Fixed in: v26.6.4
Source discussion: https://forum.objo.dev/d/356-call-messagebox-from-control-show-minimize-button-are-enabled
Last updated: 2026-06-15

Public summary

MessageBox and MessageDialog.Show() dialogs could display an enabled minimise button on macOS when shown during early control startup. Modal message dialogs should not be minimisable.