I can confirm this bug and that debian is not affected. I installed the debian package (also had to install libjpeg62-turbo) as a workaround and now the file libjfxwebview.so is there and javafx applications with WebView do work. IMO this should be marked as very important, show stopper or something, since it probably affects most of all JavaFX applications, which is very unfortunate for an LTS release.
I can confirm this bug and that debian is not affected. I installed the debian package (also had to install libjpeg62-turbo) as a workaround and now the file libjfxwebview.so is there and javafx applications with WebView do work. IMO this should be marked as very important, show stopper or something, since it probably affects most of all JavaFX applications, which is very unfortunate for an LTS release.