ADA4522 is an amazing amp. 55 volt supplies, low noise, 5 uV max offset, EMI hardened, pA bias current. But it has a hangup mode as a follower: if the output goes to V+ the input back-to-back diodes keep both inputs above the legal common-mode range. Pity it's not RRIO.
Similar amps from TI and Maxim seem to have the same issue.
Here's one fix:
We had the depletion fets there already, to protect the amp, so all we'll do is add the dual zener. Above 8 volts or so, small zeners [1] have tiny pre-breakdown currents, so this should be fine for +-10 volt operating inputs. We'll test some dual zeners to be sure.
[1] some PITA will naturally open the zener/avalanche debate again. Everybody calls them zeners.