I don't know if this is a maybe mod compat issue i've got going on, or inherent to how the turret shields work or something, but i regularly see turrets take decent amounts of damage without touching their shield HP at all, this is really annoying when trying to create self healing defense positions with the Shield+Shield regen on hit loop rather than the using passive regen or brawler spec

Hello!
Interesting, I haven't observed this bug myself. It could be a mod compat issue yeah, could you try to narrow when that happens or what type of damage goes through the shield?

After some actual testing, it appears to be when both shield and HP are full and the shield bar disappears, the first damage of any kind that hits has a chance to bleed through, i suppose in my main save my bots continuing to heal the turrets back up was what kept triggering that and made it seem like the shield always has a chance of this happening.