processing/processing4

"Run sketch on display" fails to place window on secondary display on macOS when the sketch window would have to cross the task bar

Open

#1,361 opened on Dec 17, 2025

View on GitHub
 (1 comment) (0 reactions) (0 assignees)Java (176 forks)auto 404
bughelp wanted

Repository metrics

Stars
 (439 stars)
PR merge metrics
 (PR metrics pending)

Description

Most appropriate sub-area of Processing 4?

I'm not sure

Processing version

4.4.10

Operating system

macOS 15.6.1 (24G90)

Bug description

On macOS, the Run sketches on display preference fails to place the sketch window on a secondary display when that display is positioned above the primary display in the system display arrangement.

Instead of appearing on the selected display, the sketch window opens on the primary display, right below the task bar.

I suspect Processing attempts to position the window on the secondary display but it gets stuck against the task bar.

Preferences

Opening on Primary display

Attempting to open on secondary display (not shown)

Display arrangement

When the secondary display is positioned above the primary display, the issue occurs:

When the displays are positioned side by side, sketches open on the selected display as expected:

Steps to reproduce this

  1. Plug in a second monitor
  2. Open System Settings → Displays → Arrange
  3. Position the secondary display above the primary display
  4. Open Processing → Preferences
  5. Set "Run sketches on display" to the secondary display
  6. Run any sketch

snippet

n/a

Additional context

No response

Would you like to work on the issue?

No, I’m just reporting the issue

Contributor guide