ST_Intersects not working with ST_Expand from a point

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I would like to do a real simple thing:I have a bounding box B1 (ST_MakeEnvelope) and I want to see if a square of 100 meters arround a lat/long position intersects the other bounding box (B1).

I have tried to do this :

SELECT ST_Intersects( ST_MakeEnvelope(2.3400235176086426, 48.87195488537595, 2.3521900177001953, 48.86635145037327, 4326)::geometry, ST_Expand(ST_SetSRID(ST_MakePoint(1.888275146484375, 47.89788468044446), 4326)::geometry, 100));This should return false, because the point position if more than 100 km from my B1 bounding box ...

But I always get :

st_intersects--------------- tWhere is my mistake ?What can I do to solve this ?

Thanks per advance for your help.



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