minimap: only update while the map is closed

modules/minimap.lua

@@ -171,8 +171,11 @@ pfUI:RegisterModule("minimap", "vanilla:tbc", function ()
   pfUI.minimapZone.text:SetJustifyH("CENTER")
 
   pfUI.minimapZone:SetScript("OnEvent", function()
-    if C.appearance.minimap.coordstext ~= "off" then
+    if not WorldMapFrame:IsShown() then
       SetMapToCurrentZone()
+    end
+
+    if C.appearance.minimap.coordstext ~= "off" then
       local pvp, _, arena = GetZonePVPInfo()
       if arena then
         pfUI.minimapZone.text:SetTextColor(1.0, 0.1, 0.1)