Lates paint will do that unfortunately; it loves to adhere to
itself. Assuming the door fits are correct and there isn't
interference when they are closing, the it's the paint sticking
them together. It can last for weeks after painting - the latex
takes forever to fully cure even though it's dry, because of
lack of air when the door is closed.
If it's the paint, it will be obvious at the contact areas;
you'll see the cross-planting of the paint when it splits apart.
Clear tape would work too, but wherever you use it is likely to
pull the paint off when you eventually remove it.
Wax or even soap rubbed on the sticking areas might help but
it'll also prolong the cure completion time.
: We have a new interior latex paint job on the home, which
: includes the door and door hinges. It looks great now but some
: of the doors won't open. On a really hot day we can't even
: open some of the doors. Our grandmother essentially cannot
: leave the house until it cools down. The moment when we do
: successfully open some of the door a loud bang will occur. This
: wakes up everyone. How do I stop freshly painted doors from