Our internal recruiters ask but it's not a deal breaker if someone doesn't answer. You know what is a deal breaker? Lying.
I've personally seen two offers rescinded after it came out that someone added an egregious amount of money to their previous salary (one to the effect of made approx $100k, said they made $185 and took $175 while complaining loudly about their "pay cut").
What sucks for them is:
A) Everyone involved in that process knows they're a liar.
B) They were now unemployed because this was during the post-acceptance background checks
C) They won't be able to work at any company anyone from A is doing hiring stuff for