Soundness issue with Plonky2 look up tables

Impact Lookup tables, whose length is not divisible by 26 = floornumroutedwires / 3 always include the 0 - 0 input-output pair. Thus a malicious prover can always prove that f0 = 0 for any lookup table f unless its length happens to be divisible by 26. The cause of problem is that the...