In Ubuntu 18.04, using Gnome Tweak tool there's a way to disable the Activities hot corner. I have a multi-monitor setup, so having this feature on is extremely annoying. Anyway... After a couple of minutes (sometimes just seconds) the corner seems to re-enable itself. I check on the setting on Gnome Tweak and it's indeed disable. Here's a gif of the situation:
It seems that the problem happens after gnome-shell is restarted. Seems like this might be a bug, which if confirmed I will report it.
Any ideas on how can I prevent this from happening?