There is no other explanation i can imagine.
Like i play continents and try to get Great Lighthouse only to fail 3 turns to napoleon.
Then i reload and postpone boat and squeze extra hammers, only to get notice about faraway land GL 6 turns earlier than Napoleon's. What the hell? It like
"Ai 1 - Build GL"
"Ai 2 - Buld HG"
And when i reload
"A 1 - you will fail - get another wonder"
"A 2 - you get GL"
Like i play continents and try to get Great Lighthouse only to fail 3 turns to napoleon.
Then i reload and postpone boat and squeze extra hammers, only to get notice about faraway land GL 6 turns earlier than Napoleon's. What the hell? It like
"Ai 1 - Build GL"
"Ai 2 - Buld HG"
And when i reload
"A 1 - you will fail - get another wonder"
"A 2 - you get GL"