I know I must be missing something, it's usually user error..
 
I've been using the Nomad Pulteq EQ in X3 on a couple of tracks, and leaving the plug's GUI open so that I can tweak it as I go along.
 
Every time I change screensets, the GUI has disappeared when I return to that screenset, and I have to reopen it.
 
A minor thing, I know - what am I missing?
 
It gets strange - I tried several other plugs as I was writing this, and the same happened, including the GUI of EZdrummer.  I restarted Sonar, and now EZdrummer is there when I switch back, but any FX GUI disappears.

I was wondering if you had the plugin docked at the time. If not can you try it docked and see if you get the same result?

Thanks for posting.  It seems to happen even if the plug is docked.  When I go back the multidock only has the console view in.

is the screenset locked?
 
It won't save changes if it is.

geetsifly
is the screenset locked?
 
It won't save changes if it is.

^^^ This.
 
You start by unlocking the screenset, open your plugins GUI, then lock the screenset again

yeah I should have been more complete. I had a toddler hanging on me and was trying to step it though. :)

Thanks for your suggestions.  No, the screensets are not locked.  That ws the first thing I looked for.
 
The behaviour gets odder.  I tried again in a different project.  I have tried various plugs, both in the FX bin, and in an FX chain module in the PC.  The plug in the FX bin remains there when I switch back, but the plug in in the PC is there, but blank - just an empty shell.
 
Anyone?

jb101
Thanks for your suggestions.  No, the screensets are not locked.  That ws the first thing I looked for.
 
The behaviour gets odder.  I tried again in a different project.  I have tried various plugs, both in the FX bin, and in an FX chain module in the PC.  The plug in the FX bin remains there when I switch back, but the plug in in the PC is there, but blank - just an empty shell.
 
Anyone?

Could you post a video of this?  There is some cool video capture software called "Jing" that is free.  It will give you a link that you can use to post here.

http://www.techsmith.com/jing.html
 

I'll do it now.

First video didn't seem to work, so uploading second attempt now.