The core idea
No bond is universally safe during a recession. High-quality sovereign debt may benefit from falling rates and demand for liquidity, while lower-quality corporate and emerging-market debt can lose value as credit spreads widen.
What is happening underneath
Safety depends on issuer quality, maturity, currency, liquidity and the investor's holding period.
How investors should read it
A recession can reduce rate risk while increasing credit risk.
The same market move can carry different information depending on which maturity, issuer and risk premium is changing. Read the question together with the underlying concepts rather than treating one price move as a universal signal.