eclipse: Tried to unmap the parent of a popup

[keithc-ca]

Describe the bug
Running the latest version of eclipse (2025-09) on Linux x86-64, the IDE simply disappears. At first I thought the kernel selected it as a victim of the OOM killer, but looking at syslog after the latest occurrence I see this:

2025-09-17T16:45:13.919065-04:00 ub24 eclipse[7406]: Tried to unmap the parent of a popup
2025-09-17T16:45:13.939417-04:00 ub24 gnome-shell[2953]: WL: error in client communication (pid 7406)
2025-09-17T16:45:13.942904-04:00 ub24 eclipse[7406]: Error 71 (Protocol error) dispatching to Wayland display.

To Reproduce
I don't know exactly how to reproduce this, but it seems to occur as I press the context-menu key on my keyboard when something is happening in the background (e.g. a long-running search of my (large) workspace).

Expected behavior
Pressing the context-menu key should show the context menu rather than make the IDE disappear.

Screenshots
No screenshot: the IDE just disappears without warning.

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

2. Additional OS info (e.g. OS version, Linux Desktop, etc)
   Desktop Ubuntu 24.04.3.

3. JRE/JDK version

openjdk version "21.0.8" 2025-07-15 LTS
IBM Semeru Runtime Open Edition 21.0.8.0 (build 21.0.8+9-LTS)
Eclipse OpenJ9 VM 21.0.8.0 (build openj9-0.53.0, JRE 21 Linux amd64-64-Bit Compressed References 20250715_547 (JIT enabled, AOT enabled)
OpenJ9   - 017819f167
OMR      - 266a8c6f5
JCL      - d5f1e70d135 based on jdk-21.0.8+9)

Version since
I don't remember this occurring before eclipse version 2025-06.

Workaround (or) Additional context
No known workarounds for this problem.

[iloveeclipse]

Can you try to run Eclipse from a shell and attach GTK errors reported before crash?
Can you also try to use different JDK (like temurin)?

[keithc-ca]

I have switched (temporarily) to

openjdk version "21.0.5" 2024-10-15 LTS
OpenJDK Runtime Environment Temurin-21.0.5+11 (build 21.0.5+11-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.5+11 (build 21.0.5+11-LTS, mixed mode, sharing)

I will try to remember to start from a shell. It only happens about once a day: I will share any details the next time it occurs.

[keithc-ca]

Today I noticed these messages from eclipse:

(Eclipse:4133): Gdk-WARNING **: 09:00:36.969: Tried to unmap the parent of a popup
(Eclipse:4133): Gdk-WARNING **: 09:01:13.544: Tried to map a popup with a non-top most parent

Perhaps the title is wrong and the IDE dies for some other reason: it's still up as I write this.

[keithc-ca]

Since switching to Temurin I hadn't seen this problem; so I switched back to OpenJ9 earlier this week, and it hasn't happened since. Maybe starting from a shell avoids it somehow? Got any other suggestions on how to learn what the problem might be (without masking it completely)?