Constant Current Load fails to recover after setting load to zero
While you have chosen an answer, I thought I'd add something. Beginning courses don't cover weird behavior, in general, and violating common mode voltages is one of those things. In your case, it produces latching behavior. More common is what is known as phase inversion, and there is a good introductory article here Note that this used to be more common than it is now, as op amp design has evolved, and once upon a time phase inversion was a well-known issue, especially with the (then) new single-supply op amps. In the Dark Ages (about 20 or 30 years ago), most op amps were dual-supply, so operating near ground held no terrors for them - ground was right in the center of their comfort zone. Then along came single-supply and especially rail-to-rail op amps, and the issue became fairly acute.