I just tried but it doesn't solve my problem.

Alex
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On ott 17 2020, at 1:42 pm, Gregory Casamento <greg.casame...@gmail.com> wrote:
>
> I have made a change that uses a png file as the icon instead of the tiff and 
> this appears to resolve the issue I showed in my attachment. This is not a 
> general fix as there are a few other apps that show this issue. One of them 
> is InnerSpace in the GAP project. Please give this a try.
>
> GC
> On Sat, Oct 17, 2020 at 7:11 AM Gregory Casamento <greg.casame...@gmail.com 
> (mailto:greg.casame...@gmail.com)> wrote:
> >
> > Alessandro,
> >
> > The SystemPreferences icon has always had an issue with WindowMaker. It's 
> > just a normal tiff, but, for some reason, it shows up as color inverted 
> > when docked in the WindowMaker dock, but normal when the application is 
> > started. When you first start an application in GNUstep the icon gets 
> > written to ~/GNUstep/Library/WindowMaker/CachedPixmaps when the application 
> > is launched. I forget where precisely in the code this occurs.
> >
> > I believe this corruption might have something to do with your problem as 
> > the second time it is invoked it reads the version of the icon that was 
> > cached in the directory I indicated above.
> >
> > There are a number of possible solutions:
> > 1) Fix the tiff so that WindowMaker doesn't have an issue
> > 2) Fix WindowMaker (or GNUstep, in case the caching is happening in our 
> > code... I am not sure it is)
> >
> > I have included a screenshot of what is happening on my system to 
> > illustrate what I'm referring to. Please find it attached. I hope some of 
> > this additional information helps.
> >
> > Yours, GC
> > On Sat, Oct 17, 2020 at 4:32 AM Alessandro Sangiuliano 
> > <alex2...@hotmail.com (mailto:alex2...@hotmail.com)> wrote:
> > > This morning I had more time to do better test.
> > >
> > > I have to add that in my case is just SystemPreferences icon that is not 
> > > showed at first start.
> > >
> > > With Gorm and ProjectCenter, the window is showed as expected at first 
> > > run!
> > >
> > > Maybe is just a little bug relative to SystemPreferences in my case, or 
> > > just some request that SystemPreferences is doing and I'm not handling.
> > >
> > > Alex.
> > >
> > > Da: Gnustep-dev <gnustep-dev-bounces+alex22_7=hotmail....@gnu.org 
> > > (mailto:hotmail....@gnu.org)> per conto di Alessandro Sangiuliano 
> > > <alex2...@hotmail.com (mailto:alex2...@hotmail.com)>
> > > Inviato: sabato 17 ottobre 2020 04:59
> > > A: undefined <gnustep-dev@gnu.org (mailto:gnustep-dev@gnu.org)>
> > > Cc: undefined <gnustep-dev@gnu.org (mailto:gnustep-dev@gnu.org)>
> > > Oggetto: R: windowmaker - application icon missing at first start
> > >
> > >
> > > I wrote this email some days ago to Fred privately, because I was 
> > > thinking that the problem was relative to my window manager that is young 
> > > and ealyy stage, so i post here too bcause the problem is quite similar.
> > >
> > >
> > > Hi Fred,
> > > I write becaus ethe gnustep support in uroswm is almost completed, but 
> > > there are few things to fix, actually in the miniwindow managment. 
> > > Explain it with words would be a bit complex especially with my english, 
> > > so I made a gif pic to share with you.
> > > Here is the lin that will expire after one month:
> > > https://ibb.co/3ND5Dhw
> > > Now i explain the problem in steps amd you will noticed them in the gif:
> > > 1) First time run uroswm
> > > 2) First time a GNUstep App
> > > 3) When the App is first time started the miniwindow on the left-bottom 
> > > corner doesn't draw the icon, or better, it draws the icon but disappers 
> > > quite soon. The icon just appears for some instants and then disappers.
> > > 4) I close the App
> > > 5) I run again the app
> > > 6) At this point, the App is started for the second time, ll works as 
> > > expecetd and the miniwindow draws the icon ans show it as expected.
> > >
> > > Don't be scared by bad colors in the gif i just set low quality to the 
> > > recorder.
> > > Why at the first start of theapp the icon is not painted as we expects? 
> > > Maybe at the first run GS is doing some particular requests or 
> > > setting/asking for soe extended window manager hints?
> > > Thank you,
> > > Alex
> > >
> > >
> > >
> > >
> > > Da: Gnustep-dev <gnustep-dev-bounces+alex22_7=hotmail....@gnu.org 
> > > (mailto:hotmail....@gnu.org)> per conto di Riccardo Mottola 
> > > <riccardo.mott...@libero.it (mailto:riccardo.mott...@libero.it)>
> > > Inviato: venerdì 16 ottobre 2020 11:40
> > > A: gnustep-dev@gnu.org (mailto:gnustep-dev@gnu.org) <gnustep-dev@gnu.org 
> > > (mailto:gnustep-dev@gnu.org)>
> > > Oggetto: windowmaker - application icon missing at first start
> > >
> > >
> > > Hi!
> > >
> > > I noticed we recently have a strange behaviour, which is slightly
> > > different from setup (= installation on different computers) to setup I 
> > > have
> > >
> > > The first time I start a GNUstep application with windowmaker (I mean
> > > the first GNUstep app started ever after X11 start essentially) it has a
> > > bad icon.
> > > - on some setup it has a "generic" icon by windowmaker
> > > - on other setups it has a black looking icon, as only the "mask" of the
> > > icon, the contours are drawn
> > >
> > > A restart of the app and then starting any other app, fixes that.
> > >
> > > This was not happening before. I think it is related to at least this
> > > commit - merge:
> > >
> > > https://github.com/mozilla/newtab-dev/raw/6be44da368fb869a3d3e1975f515857352a7d9fc/browser/modules/ProcessHangMonitor.jsm
> > > Can you reproduce? How is it for you?
> > > Riccardo
> > >
> >
> >
> > --
> > Gregory Casamento
> > GNUstep Lead Developer / OLC, Principal Consultant
> > http://www.gnustep.org - http://heronsperch.blogspot.com
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> --
> Gregory Casamento
> GNUstep Lead Developer / OLC, Principal Consultant
> http://www.gnustep.org - http://heronsperch.blogspot.com
> https://www.patreon.com/bePatron?u=352392 - Become a Patron
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>
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>
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