Exchange-traded funds that buy U.S. government and corporate bonds took a hit in February, as Treasury yields rose amid fears over stubbornly high inflation. While “bonds are back,” 2023 may be “bumpy,” according to a Feb. 28 note from Lawrence Gillum, fixed income strategist for LPL Financial. “We don’t think we’ll see another year like 2022 anytime soon, but despite the higher starting yield levels, we could see periods of negative returns.” The…