FTM reward not claimed disappeared

[Pi-Rr]

Hi there,

I had ~34 FTM bribe that were claimable last week, but given gas price, I thought I would wait a few more cycles and claim everything in one go.
I just checked on https://bribe.crv.finance, and I see that my claimable FTM reward it now only 3.20 FTM :(
Are the bribes lost if not claimed every week? If so, this should be made very clear on the UI.
I hope this is just a glitch from the UI, otherwise it really doesn't make sense for small holders, particularly when you factor in the gas cost of changing your vote on Curve at the top of the gas cost for collecting the bribes.