No biggie, probably a graphical oddity and my export turned out fine but just trying to figure out whether this is a known bug (or just something that happens normally). Just remembered this from an export I did two nights ago and wanted to post/document/troubleshoot it.
 
I am on Dorchester and believe I have the latest incarnation of the CL (but I'm not sure of the CL status... I installed it last fall I think and am not certain if there has been an update or whether I have installed said update).
 
Details:
 
1) I was doing a simple audio export/stereo mixdown of "Entire Mix/Main Outputs". It was only about five raw backer tracks (no effects, routed through a single bus before the Master bus) and two guit tracks with GR5 on both of them routed through their own bus with some light QuadCurve EQ and PC2A leveler going into the master bus.
 
2) The Master bus had some light Quad Curve EQ, PC2A Leveler (set lightly) and the Concrete Limiter (set lightly just to bring up levels and barely touch the peaks).
 
3) I just happened to still have the Master Bus's Inspector View open when I began the export. I had the Export Options set to Fast Bounce. As the mixdown was processing the meters on the Concrete Limiter were displaying level changes very sluggishly and obviously innacurately (unless maybe it was taking snapshots of the levels and displaying them). The export took unusually long for such a simple project (almost as long as a real time export would have).
 
I am not used to seeing any real activity during a Fast Bounce export (but perhaps I've just never been paying attention before) and I believe this is the first time I've ever had the CL visible while doing so. As I said the export time was unusually long as well but it seems to have resulted in a trouble free file (so no big deal). Just trying to figure out if something is indeed wrong and maybe point out a possible conflict bug that needs to be repaired (if it hasn't been already).
 
Steps to reproduce...
 
1) Insert Concrete Limiter on Master Bus of a multitrack project (or I guess any project)
 
2) Open/leave open the Inspector for the Master Bus with the Concrete Limiter and its meters visible
 
3) Export/mixdown the project (Main Outs/Entire Mix but may affect other types of exports) with the Fast Bounce option enabled
 
Cheers.

I remember seeing it as well a few times with several plugins, if IIRC (I usually do not look at the screen during fast bounce), but it never slowed down, or degraded my mixdown. Did not really occur to me that it could be an unintended behavior.

Concrete Limiter is buggy and it has been confirmed, I have a beta fix and it works perfectly. It's supposed to be officially released soon is what I was told but that was over a month ago.