Filtering using "or" on different subfacts returns odd results.
Filter: facts.is_virtual = true or facts.area = office
Returns 0 records.
Filter: facts.is_virtual = true
Returns 646 records.
Filter facts.area= office
Returns 3 records.

Filtering using the less than and greater than on numeric looking data (like facts.uptime_days) also returns unexpected results.
Filter: facts.uptime_days > 400
Returns 41,42,449...

Filter: facts.uptime_days <100
Returns 0,1,10
Filter: facts.uptime_days =13
Returns 24 records.