receiver of "scheduledTime" is nil. SpIndeterminatedProgressBarMorph looks guilty

[ericwinger]

I've seen this walkback occasionally. It's pretty horrible when it happens as you can see by the picture. Also attaching one walkback stack trace from the PharoDebug file.

It showed up when I added a progress bar.

20250221_progress_bar_wipeout.txt

[Ducasse]

Hi Eric

Thanks for the report. I attract many bugs but I never saw this one. Are in Pharo 12? Do you have an idea of an action that could trigger it. I often get strange behavior when I click on the cross of the progress bar while loading code or doing something like that.

Stef