I am running Linux Mint 20.1 x86_64 on 15" laptop.
When opening Deluge for the first I time, if I choose to display the "Ratio" column, it does not show up.
It turns out it is hidden in the far right of the window. It does not even show up when the window is maximised.
The trick is to unmaximize the window, moving it to the far left while avoiding snapping to the border of the screen and make the window wider to the right and then it shows up.
After you make the Ratio column closer, it behaves normally when unselecting/reselecting the column.
I have not tried yet to see if it happens for other columns yet as I suspect it might.
Does
It might not seem like much but it took me some time to figure it out and I am not sure everybody will. I am taking the time to report it because it might put off first time users thinking "it don't work" and it would be a pity to deprive the world of such great software

Am I the only one to have experienced this on a first install ?