ADDITIONAL SYSTEM INFORMATION :
Machine #1, test case runs fine (Java 8)
-------------------------------
Windows 10 Pro, Version 1803, OS Build 17134.81
java version "1.8.0_171"


Machine #2, test case fails (Java 10)
---------------------------
Windows 10 Home, Version 1803, OS Build 17134.81
java version "10.0.1" 2018-04-17
installed from: jdk-10.0.1_windows-x64_bin.exe, SHA256 checks OK, separate download from machine #3


Machine #3, test case fails (Java 10)
---------------------------
Windows 10 Pro, Version 1803, OS Build 17134.81
java version "10.0.1" 2018-04-17
installed from: jdk-10.0.1_windows-x64_bin.exe, SHA256 checks OK, separate download from machine #2


Machine #3, test case fails (Java 11)
---------------------------
Windows 10 Pro, Version 1803, OS Build 17134.81
java version 11-ea+15
installed from: jdk-11-ea+15_windows-x64_bin.exe, SHA256 checks OK

A DESCRIPTION OF THE PROBLEM :
When resizing a JFrame window by dragging a side or corner, the window will suddenly freeze can cannot be resized any more. Also, after seizing, you cannot drag the window to a new position when you attempt a mouse drag on the title bar.
*
Code for a simple test case is appended. The test case runs fine under Java 8, but fails under Java 10 and a recent build of Java 11.
*
OBSERVATIONS
(1) Use of EventQueue in the source code constructor was to follow common practice of having a separate thread for the swing GUI. You can replace the body of the constructor with the single following line and the problem remains:
new TestWin3();
(2) I grabbed the lower right corner of the test case window with the mouse pointer and wiggled the corner in a circle, diagonally, and vertically/horizontally. After a few seconds of vigorous wiggling, the window seized.
(3) A more "complex" window seems to seize sooner. My original program had a complex GUI, and it would seize (under Java 10 & 11) with a simple slow drag to resize. In contrast, you can remove the 3 rows of GUI components - the JButton, JCheckBox, and JRadioButton lines - to make it "simple" and the window will still seize upon resizing, but it seems to take longer to do so.

REGRESSION : Last worked in version 8u171

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the test code: javac TestWin3.java
Run the test code: java TestWin3
Grab the lower right corner of the test case window with the mouse pointer and wiggle the corner in a circle, diagonally, and vertically/horizontally. After a few seconds of vigorous wiggling, the window will seize.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The window should re-size under Java 10 & 11 as it does under java 8.
ACTUAL -
Window stops resizing and, also, you can no longer drag the window using the title bar

---------- BEGIN SOURCE ----------
// TestWin3.java

import javax.swing.*; // JFrame, etc
import java.awt.*; // EventQueue, etc

public class TestWin3 extends JFrame
{
// === main() to start ===
public static void main(String[] args)
{
// mumbo-jumbo to do Swing threads right....
EventQueue.invokeLater(new Runnable()
{
public void run()
{
new TestWin3();
}
});
}
// === END main() ===

// === constructor ===
public TestWin3()
{
int rows = 3;
int cols = 5;
setLayout(new GridLayout(rows, cols));

//row 0
JPanel row0Panel = new JPanel();
for (int i = 0; i < cols; i++)
{
row0Panel.add(new JButton("button " + i));
}
add(row0Panel);

//row 1
JPanel row1Panel = new JPanel();
for (int i = 0; i < cols; i++)
{
row1Panel.add(new JCheckBox("check " + i));
}
add(row1Panel);

//row 2
JPanel row2Panel = new JPanel();
for (int i = 0; i < cols; i++)
{
row2Panel.add(new JRadioButton("radio " + i));
}
add(row2Panel);

setTitle("TestWin3");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
}
// === END constructor ===
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No workaround found.

FREQUENCY : always