This bug is happening on Windows 10 PC. It doesn’t occur on every raid, but probably at least once every four raids.
It occurs when I am holding the left mouse button down to guide my hero around and if my mouse cursor goes over the insta-troop spawn button it will think that I clicked on the button. The result of that is the insta-troop is used, sometimes I accidentally use 6 of them on one raid just because of this bug.
This didn’t used to be a problem until about 3-4 days ago, so I’m not sure what was changed within the last week.
Another strange thing is this problem doesn’t happen the mouse cursor goes over the spells/troops buttons, so it’s something specific to the insta-troops button for some reason. So maybe if the insta-troop button could have the same characteristics as the troop/spell buttons the bug could be fixed.