The "effects" tool represented with a small lightning bolt icon... Stuck on map.

I recently upgraded my subscription and got this new tool to add graphical effects, like a fireball exploding. Playing around with it has caused two fireballs to become stuck on whatever map I'm looking at. I can't seem to remove them. I don't know what the tool is called, I've been searching the wiki for help. It's kinda annoying having two giant orbs of fire hovering on my map, so if anyone can help, I'd appreciate it. Lesson of the day: Don't play with fire.

Reload the webpage.

As HoneyBadger recommended, did you try reloading the campaign?

This looks to be a bug that we've gotten a report on previous. It seems to be connected to right clicking while the effect is going. Refreshing the campaign clears the issue. I'll add this thread to our report.

Thanks for the tip. I feel kinda stupid now for not trying out something as simple as that before asking for help, but to be honest, I was in the middle of preparing a dungeon for my group and didn't feel like refreshing :) It did solve it, and you're actually right, that was what caused the problem. Thanks for your fast response time.

You're very welcome, and it's good to get reports of issues like this, so no worries. :)