I post my question/report to the Slack pharo #general channel, and someone advised me to e-mail the list. I've attached the referenced screenshots.

���Here is the interaction:
Joseph Kulisics [9:10 PM]��
Hi. I started using Pharo 5 about a week ago, and I've noticed some peculiar behavior with debugging. When I get an error in a message send, the system now seems to open a warning window for every message in the stack, which can amount to hundreds of messages. In Pharo 4, only one warning opened. In addition, when I select a warning message, I get the debugger with no stack; the stack no longer seems to be aggregated and available to the debugger instance.
Is there a system setting that controls the behavior? I looked around---I tried turning off the Glamorous tools---but nothing seemed to have any effect. The behavior is very difficult to work with. Is there an way to use the interface to at least close all of the warning windows when an error occurs?
Thanks.
Esteban Maringolo [9:12 PM]��
@offray: Yeap, and I'd also like something like jOOQ for Pharo, it could be done using Glorp internals
Offray Vladimir Luna C��rdenas [9:13 PM]��
@emaringolo: what is jOOQ ?
[9:14]��
Esteban Maringolo [9:14 PM]��
Let's continue in #databases
Offray Vladimir Luna C��rdenas [9:14 PM]��
Ohh ok
Esteban Maringolo [9:18 PM]��
Joseph, it seem like every action in the debugger is triggering a new debugger, is that what you mean?
Joseph Kulisics [9:18 PM]��
I'm not really about the description at that low a level. I have a testing suite, and when I click on the icon next to a single test to run it, a failing test will open warning windows.
[9:19]��
In Pharo 4, I got one warning for the failing message send
[9:19]��
Now I seem to get one for each message in the stack
[9:19]��
If I click on the message in the warning window, a debugger opens
Esteban Maringolo [9:19 PM]��
Are you running the tests using the Test Runner?
Joseph Kulisics [9:19 PM]��
But the debugger only has one message in the top pane
[9:20]��
Both with the test runner and clicking the icon next to the test in a browser
[9:20]��
In the test runner, I I click a test in error, I get a slew of warning windows
Joseph Kulisics [9:24 PM]��
uploaded an image: PharoScreenshot.png��
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Joseph Kulisics [9:24 PM]��
uploaded an image: PharoScreenshot.1.png��
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Joseph Kulisics [9:25 PM]��
The top image shows the stack of windows that opened in response to selecting the test highlighted in the second image
[9:25]��
(I changed a system setting to open a full debugger instead of a warning window in response to an error, but the behavior is identical when warning windows appear first.)
[9:26]��
As I mentioned, the behavior from the TestRunner is the same. The only difference is that the warnings are suppressed until you select a test in error.
[9:26]��
In Pharo 4, I'd have had one window for the error.
[9:27]��
This example isn't too bad---there are only three windows on the stack---but I've had cases where a test triggered a stack of a couple of hundred warning windows
dionisiydk [9:27 PM]��
Could it be that you test fork multiple processes?
Joseph Kulisics [9:27 PM]��
I either have to exit each one, or I have to kill the image
[9:28]��
@dionisiydk: I don't think so. I don't create a new process in the code, but I can't speak for the underlying libraries like Zinc. In any case, as you can see above, the titles of the three windows are different.
[9:29]��
@dionisiydk: In addition, each window in the stack contains exactly one message, but in exploring the data, the messages all appear to deal with the same set of objects used by the tests
[9:31]��
As I mentioned before, I made the switch to Pharo 5 last week. Before last week, the same tests produced a single error message.
[9:31]��
I did reload the underlying libraries as part of moving my software into the new image, so maybe the underlying libraries changed.
Esteban Maringolo [9:33 PM]��