Almost all Windows based sandboxing programs show an Indication that the program is Sandboxed.
# in Window title
Window border colors like Red, Yellow, Green, Purple.
Considering the fact that, if Firefox is already running, then a new Firefox opened using Firejail doesn't get sandboxed, I think it is crucial that we have some indication to know if we are protected.
for context see also #281
It would be nice to have something like this but we are missing the support in the window manager. The window/desktop manager handles the window border.
@netblue30 We should be able to set the window title though, right? I think we could go with that as a stop-gap measure...
As a workaround you could use env to set an alternative/own GTK+2, GTK+3, GTK+4, QT4, QT5 theme.
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As a workaround you could use
envto set an alternative/own GTK+2, GTK+3, GTK+4, QT4, QT5 theme.