TPageControl show no pages on MacOS

[Harry Stahl]

Very strange: When I compile my program and it is transfered via delphi to the mac and it is automaticly started, then the TPageControl shows the TTabsheets as as expected. But when I start the Program from the OS by hand, then all TPageControls does not show the content of the tab. Only when I click on the Tab, then the content will be shown.

See attached a screenshot. Delphi 10.3.3, MacOS 10.14.3. On MacOS 10.15 the Content of the tabs is displayed directly.

On Linux all works fine.

[edit: Changing the tabs was my problem; but missing displayed Content of the Tabs still open]

[Benjamin Yang]

Me too!
I am use Delphi 10.4.1, macOS Catalina 10.15.7

I append sample code!

procedure TForm3.FormShow(Sender: TObject);
begin
  PageControl1.ActivePage:= TabSheet1;
  showMessage('PageControl1.ActivePageIndex = ' + inttostr(PageControl1.ActivePageIndex));
end;

‌

[Eugene Kryukov]

Fixed at 1.25