ReuseInstance should be desktop-aware

[koppor]

Is your feature request related to a problem? Please describe.

I am using Windows Desktops. One for one task. I work on tasks in parallel. For instance. Paper reading on Desktop 1 and working on a paper on Desktop 3.

1. I have SumatraPDF opened on Desktop 1.
2. I switch to Desktop 3
3. I double click a PDF
4. Windows switches to Desktop 1

Describe the solution you'd like

Windows keeps showing Desktop 3 and a new SumatraPDF instance is started.

Setting ReuseInstanceOnSameDesktop - if true, only the currently focussed Desktop is searched for existing instances.

Describe alternatives you've considered

ReuseInstance and "Show windows from this app on all desktops" activated.

However, this merges the contexts of the desktops and puzzles me. I want to have the content of Desktop 1 and Desktop 3 seperated.

I also thought about ReuseInstance setting to false - but then I have multiple SumatraPDF windows and need to search for tools grouping windows into tabs . Example: http://alternativeto.net/software/windowtabs/ or http://alternativeto.net/software/wintabber/. However, this would slow down my system.

Additional context

Refs #5605

[GitHubRulesOK]

Hmmm unsure but this was I think raised in the past describing how ACROBAT did much the same, so it seems Windows has to redirect FOCUS to the running instance thus switches desktops for you!?
If you START 2 instances in different Desktops I think Windows keeps them apart, but dont have a system currently in that mode to try it.
I could try to run 2 copies on different devices with one shared settings file but try to avoid that as it can cause problems with timings

[koppor]

this was I think raised in the past describing how ACROBAT did much the same, so it seems Windows has to redirect FOCUS to the running instance thus switches desktops for you!?

Yes. Also happens with Visual Studio Code.

If you START 2 instances in different Desktops I think Windows keeps them apart,

Yeah, that works AFAIR.

But that means I need to keep open an instance on the respective desktops. Would work, but causes additional cognitive load for me. 😅