hi, it can still be another plugin regardless. any plugin can override TruePVE while its loaded, which is what RB does.
but you don't have tracing enabled. there's no need or benefit to have it disabled as it is only ever used when you type /tpve.trace
use that, reload TruePVE, go out of the event, type /tpve.trace, walk back in to the turret, type again to turn the trace off. look in the server console.
if you see any relevant trace messages from turrets then there could be an issue such as Protection Radius not being large enough for that specific base.
otherwise, you should not see any relevant messages as RB should override it. if RB did not allow it, then another plugin has prevented it.
I suggest turning trace on AFTER you enter the event