Originally there was some concern that the feature would cause problem for multi-step navigations since it keeps the old renderer around but it ends up to not be an issue: https://wpt.meenan.us/result/221205_ZiC4_2/
Leaving BF Cache enabled will make sure to test multi-step navigations like real visitors, including any background activity that isn't silenced immediately for more accurate results (it also allows for testing the improvements for back navigations).
Originally there was some concern that the feature would cause problem for multi-step navigations since it keeps the old renderer around but it ends up to not be an issue: https://wpt.meenan.us/result/221205_ZiC4_2/
Leaving BF Cache enabled will make sure to test multi-step navigations like real visitors, including any background activity that isn't silenced immediately for more accurate results (it also allows for testing the improvements for back navigations).