I have had Tamiya sprays do the same.3 cans,one color. Flo.red.They all leaked at the juncture of the side seam and bottom lid.
This area is known as "overlap".My guess is they leak due to not enough sealant compound in this area.
I have been building for a long time but less these days but I do like to see what everyone one else is doing and will comment on occasion.May even post a build or two.
Steve