Using Breach Tablets and not having any Breach in maps

Only happen 1 time seem pretty rare, but i always use tablet +1 / abyss /breach.
And one map open with only Abyss not anything else. Was easy to see with the icon on mechanic tracking. And from what i remember you should always have 2 mechanic event with no tablet. Have no rogue no spirit no shrine no strongbox or any of the mechanic from tablet.