Aris You May want to start Support Thread Topic for CSTB v1.0.7pre testers Rated 5 out of 5 stars
I recommend starting one here:
Note: The reason I suggest this is that I have quite extensive bug report for CSTB v1.0.7pre2.(Using Large Icon Mode setting and 2 add-on Incompatibles that break CSTB v1.0.7pre2 on Nightly Fx14.0a1).
If you do you may want to link it to CSTB AMO site page as the Support site.
Here is the link to the new support thread: http://forums.mozillazine.org/viewtopic.php?t=2447747
Keep in mind FF14.0a1 toolbar buttons support in CSTBB is experimental because it isn't final in FF nightlys (yet?). They could change a lot of things that may break this settings even more.
In fact I see some add-on toolbar button incompatibilities too even without CSTBB installed or enabled.
There is a part in the new nightly css code where they set some paddings that affect all non-default toolbar buttons. I believe they could change this later or force ext. devs to change their add-ons code, who konws?