I'm trying one more posting of this from a month ago hopefully to get more eyes on it (got no replies last time). I apologize for the repeat, and will stop if no one has any leads on how to fix this. It's such a frustrating bug that's easily reproducible and only happens with Cygwin-X multi window mode. ---------- Forwarded message --------- From: John Harris Date: Sun, Feb 13, 2022 at 10:14 AM Subject: Cygwin-X AWT windows snap back after drag in multi-window mode (w/example): long-standing issue To: For well over ten years, I (and other developers with the same configuration) have been experiencing this issue with Cygwin-X in multi-window mode with Java AWT apps. The issue is simply that the first time (and only the first time) certain AWT dialogs are dragged to move them, they snap back to their original position. The problem exists across JDK's, computers, cygwin versions, fresh installs, and everything I've tried. This can easily be reproduced by compiling (javac) and running (java) the attached trivial AWT code. If you get this error at runtime: Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper ...then you need to do these steps: edit /etc/java--openjdk/accessibility.properties, commenting out the line that reads, assistive_technologies=org.GNOME.Accessibility.AtkWrapper The attached program will demonstrate the issue. Also attached are (shortened) cygcheck output and the XWin log.