This occurs during the Portal Combat minigame, if the portal loads on a tile containing a plant, and also if a plant is placed on a tile where the portal is. F2 doesn't even tell if a portal is there.
Thanks for the report. Just pushed a fix, which will be in the next update.
This issue was introduced when I moved the tile info text to external files.
This occurs during the Portal Combat minigame, if the portal loads on a tile containing a plant, and also if a plant is placed on a tile where the portal is. F2 doesn't even tell if a portal is there.