Aalto VST - Renosie causes presets list to close?

OSX 10.8.3 Aalto VST 1.3.2 Renoise 2.8

When I open Aalto as a VST in renoise and browse through presets the presets drop down has a really annoying habit of suddenly closing up making me have to reopen the presets drop down any number of times in order to browse. any sudden jerk of the trackpad (not a click!) causes it to close. it’s very annoying.

Anyone else experience this with Aalto? happens me almost all the time.

How many parameters does that VST has? I have the idea that Renoise is polling for vst parameters everytime one consults its parameter list. this is especially noticable with VST plugins that have a very large amount of host controllable parameters.