Apologies, I did try to file this defect using https://bugreport.java.com/, but it seems not to allow you to submit the report form.
I believe that this issue with libjfxwebkit.so has already been reported, but has been marked as closed (fixed) in the following bug reports here: https://bugreport.java.com/bugdatabase/JDK-8346250/ https://bugreport.java.com/bugdatabase/JDK-8331765/ However, my testing has shown the defect still affects a number of current versions including: 21.0.12 and 27. I am able to confirm the defect is present in version 27 here, by following these steps here... $ wget https://download2.gluonhq.com/openjfx/27/openjfx-27_linux-x64_bin-sdk.zip --2026-09-29 08:44:08-- https://download2.gluonhq.com/openjfx/27/openjfx-27_linux-x64_bin-sdk.zip Resolving download2.gluonhq.com (download2.gluonhq.com)... 152.42.149.30 Connecting to download2.gluonhq.com (download2.gluonhq.com)|152.42.149.30|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 64941106 (62M) [application/zip] Saving to: ‘openjfx-27_linux-x64_bin-sdk.zip’ openjfx-27_linux-x64_bin-sdk.zip 100%[=================================================================================================>] 61.93M 47.2MB/s in 1.3s 2026-09-29 08:44:10 (47.2 MB/s) - ‘openjfx-27_linux-x64_bin-sdk.zip’ saved [64941106/64941106] $ unzip openjfx-27_linux-x64_bin-sdk.zip Archive: openjfx-27_linux-x64_bin-sdk.zip creating: javafx-sdk-27/ inflating: javafx-sdk-27/src.zip creating: javafx-sdk-27/lib/ inflating: javafx-sdk-27/lib/libjfxwebkit.so ... inflating: javafx-sdk-27/legal/javafx.media/directshow.md inflating: javafx-sdk-27/legal/javafx.media/ADDITIONAL_LICENSE_INFO inflating: javafx-sdk-27/legal/javafx.media/libffi.md inflating: javafx-sdk-27/legal/javafx.media/glib.md $ cd javafx-sdk-27/lib $ readelf -sW libjfxwebkit.so | grep Open 809: 00000000007e2110 1447 FUNC GLOBAL DEFAULT 12 Java_com_sun_webkit_WebPage_twkOpen@@SUNWprivate_1.0 1647: 00000000006ad0e0 235 FUNC GLOBAL DEFAULT 12 Java_com_sun_webkit_dom_DOMWindowImpl_getOpenerImpl@@SUNWprivate_1.0 2053: 00000000007e2110 1447 FUNC GLOBAL DEFAULT 12 Java_com_sun_webkit_WebPage_twkOpen 3611: 00000000006ad0e0 235 FUNC GLOBAL DEFAULT 12 Java_com_sun_webkit_dom_DOMWindowImpl_getOpenerImpl $ jar xf javafx.web.jar $ grep twkDidOpen com/ -r grep: com/sun/webkit/network/SocketStreamHandle.class: binary file matches The java code which references the missing symbol can be found here... https://github.com/openjdk/jfx/blob/0f472df6f5bef6320cede09fa7cc959e31fec416/modules/javafx.web/src/main/java/com/sun/webkit/network/SocketStreamHandle.java#L366 I would be very grateful if you could provide me with an update on this defect since it is currently preventing me from using a version after 21.0.2 (the defect was introduced in 21.0.3). Best Regards Jon
