Description

SableRaf

opened on Mar 4, 2026

Issue body actions

Most appropriate sub-area of Processing 4?

PDE

Processing version

4.5.1, 4.5.2

Operating system

macOS 15.6.1 (Sequoia)

Bug description

Processing crashes when the Welcome window is dragged from the primary display to a secondary monitor.

Steps to reproduce this

1. Launch Processing.
2. Wait for the Welcome window to appear.
3. Drag the Welcome window to another monitor.
4. Processing immediately crashes and macOS shows a crash dialog.

snippet

n/a

Additional context

Crash summary

Crashed Thread: Java: AWT-EventQueue-0
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Termination Reason: Abort trap: 6

Relevant trace

Thread 40 Crashed:: Java: AWT-EventQueue-0
0 libsystem_kernel.dylib __pthread_kill
1 libsystem_pthread.dylib pthread_kill
2 libsystem_c.dylib abort
3 libjvm.dylib os::abort
4 libjvm.dylib VMError::report_and_die
5 libjvm.dylib JVM_handle_bsd_signal

Screenshot

Would you like to work on the issue?

No, I’m just reporting the issue

Activity

1. SableRaf

   added

   bugSomething isn't workingSomething isn't working

   on Mar 4, 2026
2. Stefterv commented on Mar 4, 2026

   

   Stefterv

   on Mar 4, 2026

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   Mixed display densities strike again!!

   Reacted by Raphaël de Courville
3. Stefterv commented on Mar 4, 2026

   

   Stefterv

   on Mar 4, 2026

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   Reproduced it by setting my external display to @1x

   Reacted by Raphaël de Courville
4. Stefterv commented on Mar 4, 2026

   

   Stefterv

   on Mar 4, 2026

   Member

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   Running the window standalone does not have the issue, so that's a trace, same with the Preferences Screen
5. Stefterv commented on Mar 4, 2026

   

   Stefterv

   on Mar 4, 2026

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   Windows has the same issue
6. Stefterv

   added a commit that references this issue on Mar 4, 2026

   Avoid disposing current unique window

   This issue will close once commit 18455f9 is merged into the 'main' branch.

   18455f9
7. catilac

   added a commit that references this issue on Jul 2, 2026

   Merge branch 'processing:main' into fix-processing#1471

   8202f80
8. catilac

   closed this as completedin #1472on Jul 2, 2026
9. pull

   added a commit that references this issue on Jul 3, 2026

   Avoid disposing current unique window (processing#1472)

   This issue will close once commit c732109 is merged into the 'main' branch.

   c732109

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