My test song has BIAB type accurate and loud drum beat. So, Chord Wizard can identify the tempo correctly.

However, there is a certain programming issue here because

without count-in options your are one bar ahead
with count-in options you are one bar behind

BIAB with no tempo map workaround is
1. set no count-in options and
2. delete first bar from notation display

and you are fully syncronized.

The issue is how BIAB uses internally count-in options in playback.
I guess that programmer can tell you the reason.