WARNING: Loading FXML document with JavaFX API of version 19 by JavaFX runtime of version 17

[cinnamonmatexfce]

JRomManager-3.0.0-beta.7-x86_64.AppImage

$ LC_ALL=C ./JRomManager-3.0.0-beta7-x86_64.AppImage 

(JRomManager:2110): Gtk-WARNING **: 12:09:38.700: Theme parsing error: gtk.css:1649:16: '-gtk-icon-size' is not a valid property name

(JRomManager:2110): Gtk-WARNING **: 12:09:38.700: Theme parsing error: gtk.css:1652:16: '-gtk-icon-size' is not a valid property name
Starting...
Apr 16, 2023 12:09:39 PM javafx.fxml.FXMLLoader$ValueElement processValue
WARNING: Loading FXML document with JavaFX API of version 19 by JavaFX runtime of version 17

$ LC_ALL=C pacman -Qs java

local/java-environment-common 3-5
    Common files for Java Development Kits
local/java-runtime-common 3-5
    Common files for Java Runtime Environments
local/java17-openjfx 17.0.6.u3-1
    Java OpenJFX 17 client application platform (open-source implementation of JavaFX)
local/jdk17-openjdk 17.0.6.u10-2
    OpenJDK Java 17 development kit
local/jre17-openjdk 17.0.6.u10-2
    OpenJDK Java 17 full runtime environment
local/jre17-openjdk-headless 17.0.6.u10-2
    OpenJDK Java 17 headless runtime environment

$ LC_ALL=C sudo archlinux-java status && sudo archlinux-java get
Available Java environments:
  java-17-openjdk (default)
java-17-openjdk

[optyfr]

But the app works... right?
It's just because I have edited the FXML with latest SceneBuilder, as long as I don't use jfx19 specific controls, attributes or methods, there is nothing to worry

[cinnamonmatexfce]

But the app works... right? It's just because I have edited the FXML with latest SceneBuilder, as long as I don't use jfx19 specific controls, attributes or methods, there is nothing to worry

Oh, OK. Glad to know. Thank you @optyfr ! 😉