Torrent is uploading despite the setting "No seeding"

Hello!

I have Tribler 7.12.1 x64 installed.

If I set the seeding setting like this:
image

…then the torrent is still seeding (also after restarting Tribler):
image
image

If I switch to “seeding for hours:minutes” and set it to “0:00”, then it also keeps seeding.

Do I understand something wrong or is this a bug?