People literally beeline my casters and shove them every fight that I don't stack them behind front-liners. Maybe it's a difficulty thing?

It's also super fight-dependent because the only reason to use shove is if you can push someone into something. If it's just a fight in an open field there's no use.

Though it is a super easy way to just try to get away free from a AoO from a melee person in range. The action economy is supposed to be "if I don't want to take an AoO and can't teleport, then I have to Disengage and that's my action", but now they can try a shove for "free" and if it works they can move freely and still attack.