Fortress task stuck on -1%

I have made a task in the fortress and when it finished, the progress is shown at -1%. I can’t accept it so I’ve lost a slot to make other research.

I think I’m having the same issue. I have a fortress task that’s complete, but I can’t even see it on the menu/prompt to accept/finish and move on.

Yes, I can see it but only out of the fortress, while in the fortress menu it doesn’t appear anymore. It did, that’s where it was showing the -1% completion, but now it only shows the warning of “task complete” but no task to be found.