Idk.
They don't really prey on humans & we coexisted without much issues for humans (very much a lot of issues for them). Then that is not that hugely dissimilar with polar bears (seals are still better than humans).

Eating a baby in case of big dogs & cats every so many years doesn't really count I think, in nature it's usually disregarded even if a regular thing bcs of the size difference (and the mortality rate to adulthood). A bit along the lines that babies of all species are food & that doesn't give you much representative info.

With polar bears, even with villages in the migrating area (their ecosystem is shrinking rapidly), you just can't be outside, they will munch you.

Hikers can hike through woods with wolves, you can park your car next to lions, ... tigers would be borderline (and endangered), but it seems they fear us, they fear injury & our unpredictability generally (when forced to individuals can prey on humans, they were a few documented cases, but doesn't seem the default behaviour).

Polar bears don't back off if they need food, they can stalk you & (try to) break obstacles.
Maybe it's just that it harder to fight of a polar bear just of it's mass & power?

Also wiki/Polar_bear_jail.