using a ADA4522-2 .
sweeping system to test 3dB BW/
signal into the ADA4522 (each config) ~ 1Vpp at 255KHz (see the blue in pic).
output of invertcxonfig looks good.
output of volt follower looks 'oscillatory/slewed.
not sure why??????
meausufing at output of ADA4522 direct with 1Megohm scope probe (i.e. no long cables/capacitance/etc)
You are probably slew rate limited. Cut the amplitude in half and see what happens.
Also see LB-19 at ti.com.