I think it’s neat how easily one can freeze and unfreeze their card (with Apple Pay it works very harmoniously).
However, with Gpay on my work phone I’ve had issues with relinking the card where I’ve accidentally fat fingered the freeze button (this may be a bug).
Hey! I just did a quick check on my personal phone, and my card disappeared straight away when frozen as expected, and returned pretty much straight away too when unfrozen. Might be some weird behaviour in your work phone. I have a Huawei P30 on Android Q (9). What phone and OS version is your work phone?