Why this system not works IF there are trees?

[JFAMAP]

• HasarTespit
  • Events
    • Game - DamageModifierEvent becomes Equal to 1.00
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • IsDamageSpell Equal to True
      • Then - Actions
        • Set DamageEventAmount = (DamageEventAmount x 1.10)
        • Game - Display to (All players) the text: (String(DamageEventAmount))
      • Else - Actions

Believe it or not. This system NOT works if my map includes doodads.
If the attacker is Neutral Hostile and casts spell, it works.
If the attacker is Player and casts spell, not works.

I have opened the map, selected all doodads, deleted, tested map and IT WORKS.

What - is - happening - to - my - map?

Currently it works after UNDO but it is suspicious.
Version 1.26a