Reaper v5.40pre13a/x64, Win7.
BUG description: PDC doesn't reset itself properly after tweaking pre-comp in ReaComp.
When increasing the pre-comp value, PDC grows accordingly, but when decreasing the value, PDC changes abruptly and doesn't reset itself to zero. PDC can be re-set manually by unloading and loading back the plugin.
The same behavior in ReaGate and pre-open.