Hello!
OS: 6.11.10-2-MANJARO x64
JPRO: 2024.4.1
If I run the following code at the Stage's start
String path = String.format("/icons/logotype_%d.png", size);
try (InputStream is = App.class.getResourceAsStream(path)) {
stage.getIcons().add(new Image(is));
} catch (IOException e) {
System.out.println(e.getMessage());
}
then the icon is appearing at the site, but all the FX's dialogs and alerts cannot close, and at one case there is the following error:

without the icon all is OK