Checked the icon set and they are all within the 32x32 square, none are overlapping.
Checked a new project and same is happening in that with NO other plugin scripts being used.
I've come across another issue too, that I think maybe needs an addition/change..
So i have an empty character event behind a counter, but have an event that deals with the shop in front of the character event on a desk..
If you use a display icon tag on a character event that has NOTHING inside the contents window of the character event, the script won't run. To make it run I have to at least put an empty text box in the event. Which doesnt really matter cos player cant interact with the character event, they interact with the shop event in front of the character event BUT still.. having to at least have an empty text box in the character event to make the icon appear is weird behavior.
Here's the video.. i show the events so you can see and then run the game, then delete one of the text in the one event so you can see that the icon dont show without me putting in a text comment. You can also see the weird box outline that shows on the icon for me too..