Wayland is a display server protocol that provides a more modern and secure alternative to the X11 protocol, which has been in use since the 1980s. Wayland is designed to be more efficient and performant than X11, and it also supports more modern features such as multi-touch and high-DPI displays. However Java and Java GUI is lacking native Wayland support. Instead Java uses XWayland which is compatibility layer for native X11 applications. Tests on Fedora 39 that uses uses Wayland by default shows that certain features Actions3, such as creating markers and showing showing current values might not work correctly in that configuration. These features are implemented with JFreeChart Overlays.
First screenshot shows correct behavior of application - all markes (green vertical lines with date) and current values line are visible, current values are selected with small circle.
Second screenshot shows behavior of Actions3 on Fedora 39 with Wayland: markers
and current line are partialy visible, current values are seleceted only on one
data series and box with current values don't have border.
User running Actions3 on linux distribution that uses Wayland and see effects
described above has two options to try:
actions3.jar. When application is run with that runtime on Fedora 39
then undesired effect are not visible.