"Invalid class typecast" exception occurs when a form derived directly from TdxCustomRibbonForm is maximized or when the Ribbon Display Options menu is displayed if the form hosts a TdxRibbon control whose SupportNonClientDrawing property is True.
ExpressEditors Library
A property editor for TPicture, TGraphic, and their descendants converts an image pasted from the clipboard to a 32-bit TdxSmartImage object and discards the image's transparency information.
cxLookupComboBox - The ItemIndex property value is incorrect when the Properties.OnChange event occurs if the EditValue property value matches the focused record in the Properties.ListSource dataset and the Properties.ListOptions.SyncMode property is True.
In-place cxLookupComboBox - The editor displays no values for a column/row bound to the fkLookup dataset field.
TdxOpenFileDialog and TdxSaveFileDialog - A confirmation message freezes the application if it has the TcxShellComboBox editor whose Properties.IncrementalSearch property is set to True.
ExpressLibrary
All controls with a translucent background are drawn black at design time in Embarcadero RAD Studio 10.4.2 if the form's DoubleBuffered property is set to True.
TdxCloudStorage - An AV occurs when the Google Drive data provider obtains file structure information.
ExpressDocking Library
TdxDockingController.LoadLayoutFrom~ procedure call incorrectly restores dimensions of the TdxFloatDockSite control if it is on a monitor whose DPI differs from the monitor where the main form is displayed.