Hi Felipe,
I'm not sure it is entirely related but may be worth trying: I have had it before where if a navigate stage is copied from one page and then pasted on another page (in the same or different object) then it will attempt to complete the same logic as the original stage that was copied, in your instance this is by attaching to the desired application. This happens even though the visible logic within the navigate stage does not contain the attach logic.
Even duplicating the object was found not to fix this as it also duplicates the error.
Instead can I suggest you pull in a new navigate stage (rather than one that has been copied/pasted) and then add the desired logic within the newly created navigate stage.
Once you have done this and tested that the issue is resolved, you can the delete the old navigate stage that contains the error.
I hope this helps.
Kind regards,
Ian
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Ian Campbell
RPA Specialist
Allen & Overy
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