1.9.5 - new game designed to test this. period as a decimal.
I don't know if this is WAI, so I wanted to keep it outside the bug thread for now.
A ship whose speed is less than racial tracking speed, with a BFC >= 1x, tracks at racial tracking, not ship speed.
This feels like a bug to me, as there's no real reason to drop BFC tracking lower than 1x (which is possible), as you're getting "free" minimum tracking by not needing engines.
To replicate:
Make a ship design with no engines, any beam weapon, and a BFC. Shoot at any ship with an engine, look at hit chance. Should be ~ MIN(tracking speed/ ship speed, 1) chance to hit, modified by range penalty on BFC.
This also makes turretless stationary beams (for JP or planet defense) a meaningful choice, another reason why it may not be WAI.