first of all; this program is simple amazing. This is what I'm looking for for a long time and I just recognized it nowadays...
Is that a known possible bug that some plugins' window are not "tighten" to its own size? I mean some plugins have an empty space on the left and right side of/in the window.
Check it here:

Look at KarmaFX Deelay.
I couldn't find any common things in the plugs to decide what occurs this phenomena. What I'm sure that the VSTi plugs are fine, they don't have this "space".
A feature request:
I didn't find any options about a "Plugins are always on top" feature, maybe I missed something. If not could it be possible to implement this feature? It is a little bit annoying when - let's say - a plugin is open but I want to edit an other while I see the opened too and click on an 'Edit' and whoops the main window "jump" to the top, hiding the plug(s).
Thank You and keep up the good work!
