Describe the bug Rule conditions with $exists operator not working correctly in the ability.can method. The syntax is correct and using the accessibleBy function returns the correct query conditions. Checking with the ability.can method returns false on the same objects that match the conditions of the query above, removing conditions with the $exists operator fix the issue. The debugging methods aren't helping either

To Reproduce Steps to reproduce the behavior: 1- Create a mongoose model 2- create rules for mongoose model with condition that uses the $exists operator 3- create ability with createMongoAbility using those rules 3- get objects using query conditions returned by accessibleBy method 4- use the ability.can method on those same objects returned by the query

Expected behavior ability.can method should be working correctly with $exists operator

Interactive example

CASL Version

@casl/ability - v 6.7.3 @casl/mongoose - v 8.0.3

Environment: nodejs version tested 20 -> 23