With the Server test suites moving to execution tasks for increased parallellism, the number of BFG tickets has grown accordingly. This is caused by a couple of factors.
First, widespread failures that affect multiple tests in a suite would create X number of BFGs instead of 1.
Second, consistently failing tests are not guaranteed to run in the same execution task, due to the way the knapsack packing algorithm relies on test history information. This prevents backtracking from working and could cause more BFGs to be created for the same failure on different execution tasks