Overshoot Before Transition
The OPA357 has a bandwidth of a bit less than 100 MHz when used in an inverting configuration as per your 2nd op-amp. Look at the top right picture on page 5 of the data sheet. Also note that the GBW product is stated at 100 MHz and if you look at the open-loop gain diagram on the bottom right of page 7 it clearly indictaes 100 MHz is unity gain.

You cannot expect a Howland current source to behave with dignity at 100 MHz if you use this op-amp.

I think the under-shoot situation you got is a little difficult to get to the bottom of because you only show the output waveform in your question and there is nothing to indicate the input waveform and what it might be doing. Both superimposed on the same graph would help.