GUI: ClassCastException with JDesktopIcon on mouse dragging

For extra reference I was playing against AI using Velici-ramp-tor precon against Jeskay Strikers precon. This happened trying to end my turn after not being able to attack because of ghostly prison.

Another note, i heavily use the shortcut keys to use mainly 3 actions: to end, to your turn, to main.
I used to end with a remapped key of "w" and then this error happened. Haven't really had much issues before, but figured to give as much detail as i can.

Error type: CLIENT - unhandled error in GUI - ClassCastException

Client version: 1.4.58-V1 (build: 2025-10-06 20:20)
Java version: 1.8.0_201
Default charset: UTF-8

javax.swing.JInternalFrame$JDesktopIcon cannot be cast to javax.swing.JInternalFrame

Stack trace:
javax.swing.DefaultDesktopManager.endDraggingFrame(DefaultDesktopManager.java:401)
javax.swing.plaf.basic.BasicDesktopIconUI$MouseInputHandler.mouseReleased(BasicDesktopIconUI.java:210)
java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
java.awt.Component.processMouseEvent(Component.java:6539)
javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
java.awt.Component.processEvent(Component.java:6304)
java.awt.Container.processEvent(Container.java:2239)
java.awt.Component.dispatchEventImpl(Component.java:4889)
java.awt.Container.dispatchEventImpl(Container.java:2297)
java.awt.Component.dispatchEvent(Component.java:4711)
and other 24 lines

Start with the reported Swing stack trace, especially DefaultDesktopManager.endDraggingFrame and BasicDesktopIconUI$MouseInputHandler.mouseReleased, and reproduce the error while dragging the GUI or using the reported shortcut. Done means ending the turn in the described situation no longer raises the JDesktopIcon ClassCastException.