I found out from this post shared by Elizabeth Watson-Brown, Greens MP for Ryan:
In one of the first acts of the new Parliament, Labor have made a sneaky change to procedure in the House of Representatives that means major party MPs won’t need to go on the record as often on how they vote.
The new rules means that when 6 or less MPs vote on one side, the votes of the majority - typically the government and the opposition - won’t be recorded.
The government wants to let their MPs off the hook, so they can go home to their electorates without having to justify their voting record. It’s about protecting themselves, not serving the public.
The combined major party vote is at historic lows and this is reflected in a crossbench that is larger than ever, but the major parties would rather hide than be honest with the people about what they’re voting for.
What this means is that resources like "They Vote For You" will be less valuable, because any issue where Labor and the LNP agree, along with half the cross-bench, you will know who voted against it, but you won't know if the others voted for it or abstained (or were merely not in Parliament). It has the effect of making it much harder to prove times when the major parties act in unison, and thus harder to make accusations that they are "both the same" (or at least are "the same" on a particular issue).