Hello,
perhaps this is a problem is just in image that i use, -- I tried
reproducing bug in stock image and I see no problem there, so, sorry for
noise.

> Can you confirm this is exactly what you are doing:
> press blue button on world background
> press this halo handle:
yes.
> What do you mean exactly with "stalls the Smalltalk"? Can you interrupt
anything by pressing cmd+dot? Does your VM react? Do you see any debuggers?

Smalltalk process starts using ~66%CPU, and  cmd+dot does not work. will
try to find out why this happened to mine image.

------------------------------
> *Von:* Squeak-dev <squeak-dev-bounces at lists.squeakfoundation.org> im
> Auftrag von Vaidotas Didžbalis <vaidasd at gmail.com>
> *Gesendet:* Freitag, 28. Februar 2020 12:46 Uhr
> *An:* Squeak-Dev
> *Betreff:* [squeak-dev] [bug] Squeak5.3rc2. Clicking on World's "paint
> background" Halo stalls the Smalltalk
>
> Clicking on World's "paint background" Halo stalls the Smalltalk.
>
> Squeak5.3rc2
> latest update: #19422
> Image format 6521 (32 bit)
>
> Virtual Machine
> ---------------
> Open Smalltalk Cog[Spur] VM [CoInterpreterPrimitives
> VMMaker.oscog-eem.2597]
> Unix built on Jan  6 2020 16:11:12 Compiler: 5.4.0 20160609
> platform sources revision VM: 201912311458
>
> regards,
> Vaidotas
>
>
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