Search is broken

[Moltresrider]

I tried to search my region files for "minecraft:end_portal" and it always turns up empty even though I am 100% sure that there are end portals in my world, I just do not remember where they are.

Clearly the search does not work properly in this program.

[DeadZoneLuna]

It seems to find it (if you select "value" as the search), but it's more of a search performance issue